Griya Journal of Mathematics Education and Application

Teori Dualitas Lagrange dalam Optimasi Non-Linier: Tinjauan Naratif dari Perspektif Analisis Geometris Modern

Aprilia Rahmawati, Sisca Octarina, Fitri Maya Puspita — Sun, 10 May 2026 00:00:00 +0100

Lagrangian duality theory constitutes a fundamental framework in nonlinear optimization analysis, connecting primal problems with dual problems through the Lagrange function. This article presents a comprehensive narrative review of Lagrangian duality theory development from the perspective of modern geometric analysis. We explore the geometric structure of primal-dual spaces, Karush-Kuhn-Tucker (KKT) optimality conditions, and strong and weak duality theorems in the context of constrained optimization. The discussion encompasses geometric interpretations of saddle points, convexity in duality theory, and the duality gap as a solution quality measure. Furthermore, we analyze theoretical applications from functional analysis and topology perspectives, including the role of reflexive Banach spaces and Fréchet differentiability in characterizing optimal solutions. The findings demonstrate that geometric approaches provide profound insights into optimization problem structures and open new perspectives in numerical algorithm development. This review contributes to a more robust theoretical understanding of the mathematical foundations of nonlinear optimization and its relevance in contemporary applied mathematics.

Analisis Statistik Pengaruh Mata Kuliah Ekonometrika Terhadap Minat Mahasiswa Jurusan Ekonomi dalam Penelitian Kuantitatif

Mon, 11 May 2026 06:10:44 +0100

Penelitian ini bertujuan untuk menganalisis pengaruh penguasaan mata kuliah Ekonometrika terhadap minat mahasiswa dalam melakukan penelitian kuantitatif. Penguasaan metode kuantitatif merupakan kompetensi penting bagi mahasiswa ekonomi dalam menghadapi tantangan penelitian berbasis data. Penelitian ini menggunakan pendekatan kuantitatif dengan desain survei. Data dikumpulkan melalui kuesioner skala Likert dan dokumentasi nilai akhir mata kuliah Ekonometrika. Sampel penelitian terdiri atas mahasiswa Program Studi Ekonomi Syariah STAI Al-Gazali Soppeng yang telah menempuh mata kuliah Ekonometrika. Analisis data dilakukan menggunakan korelasi Pearson dan regresi linear sederhana setelah terlebih dahulu memenuhi uji asumsi klasik. Hasil penelitian menunjukkan bahwa penguasaan mata kuliah Ekonometrika berpengaruh positif dan signifikan terhadap minat mahasiswa dalam penelitian kuantitatif dengan koefisien regresi sebesar 0,654 dan nilai signifikansi . Koefisien determinasi menunjukkan bahwa penguasaan Ekonometrika menjelaskan 39,9% variasi minat penelitian kuantitatif mahasiswa. Temuan ini menegaskan pentingnya pembelajaran Ekonometrika yang aplikatif dan berpusat pada mahasiswa untuk meningkatkan minat dan keterlibatan mahasiswa dalam penelitian kuantitatif.

Analisis Kemampuan Mathematical Problem-Solving Dalam Pembelajaran Matematika: Systematic Literature Review

Marweli Yusuf, Lukita Ambarwati, Vera Maya Santi — Tue, 19 May 2026 08:09:51 +0100

Penelitian ini bertujuan menganalisis kemampuan mathematical problem-solving (MPS) dalam pembelajaran matematika melalui pendekatan Systematic Literature Review (SLR). MPS dipahami sebagai kemampuan siswa dalam memahami, merumuskan, merencanakan, dan menyelesaikan permasalahan matematis yang tidak memiliki prosedur penyelesaian langsung. Kajian dilakukan dengan mengikuti tahapan SLR, mulai dari perumusan pertanyaan penelitian, strategi dan metode pencarian, penetapan cakupan, hingga penyusunan search string. Pencarian artikel dilakukan melalui Google Scholar dan ERIC dengan kriteria inklusi enam tahun terakhir. Dari 50 artikel yang teridentifikasi, 15 artikel memenuhi kriteria final dan dianalisis secara mendalam. Hasil telaah menunjukkan bahwa sebagian besar penelitian menggunakan strategi pemecahan masalah Polya, sementara strategi Sumarmo, NCTM, serta Krulik dan Rudnick digunakan dalam frekuensi lebih rendah. Temuan juga mengungkap bahwa kemampuan MPS siswa masih tergolong rendah akibat keterbatasan penguasaan konsep, fleksibilitas kognitif, serta kapasitas memori kerja. Secara keseluruhan, SLR ini memberikan gambaran komprehensif mengenai definisi, tahapan, dan karakteristik soal MPS, serta menawarkan rekomendasi untuk meningkatkan implementasinya dalam pembelajaran matematika.

Analisis Komparasi Kendaraan Penumpang dan Logistik di Pelabuhan Penyeberangan Bakauheni

Febriyanti Himmatul Ulya, Aulia Ika Atika, Yulia Puspita Sari, Hartina Husain — Mon, 25 May 2026 18:00:29 +0100

Fluktuasi jumlah kendaraan di pelabuhan penyeberangan menimbulkan ketidakpastian operasional, terutama pada rute-rute sibuk seperti lintasan Bakauheni-Merak. Memahami pola kedatangan berdasarkan jenis kendaraan dan waktu kedatangan kapal sangat penting dilakukan untuk meminimalkan antrean dan meminimalisir biaya operasional. Penelitian ini bertujuan untuk menganalisis pengaruh dan interaksi antara kategori kendaraan penumpang dan kendaraan logistik serta waktu kedatangan kapal (shift) terhadap jumlah kendaraan. Penelitian ini merupakan penelitian kuantitatif dengan analisis data menggunakan analisis ANOVA dua arah. Berdasarkan analisis yang dilakukan pada 75.407 data kedatangan kapal menunjukkan bahwa jenis kendaraan dan waktu kedatangan kapal memiliki pengaruh independen yang signifikan (p < 0,05). Ditemukan pula efek interaksi yang signifikan (p = 0,000), di mana kendaraan penumpang (kelas IVA) mendominasi pada jam kedatangan 08:00–15:59 dan 16:00–23:59 (Rata-rata ≈ 26 unit), sedangkan kendaraan logistik (kategori IVB) mencapai puncaknya antara pukul 00:00 dan 07:59 (Rata-rata = 6,89). Model tersebut hanya menjelaskan 18,3% variasi, temuan-temuan ini secara konsisten menunjukkan adanya pembagian waktu operasional yang berbeda-beda di antara jenis kendaraan.

Hubungan Self-Efficacy dan Motivasi Belajar dengan Kemampuan Koneksi Matematis Mahasiswa

Tue, 02 Jun 2026 23:13:00 +0100

This study aims to examine the relationship between self-efficacy and learning motivation with students’ mathematical connection ability. The background of this research is the low ability of students to connect mathematical concepts, especially in higher education. This study used a quantitative approach with a correlational design involving 50 sixth-semester students who had taken a Basic Statistics course. Data were collected through self-efficacy and learning motivation questionnaires, as well as a mathematical connection ability test. The data were analyzed using descriptive statistics and inferential statistics, with the Spearman correlation test applied due to non-normal data distribution. The results showed that learning motivation has a significant relationship with mathematical connection ability, while self-efficacy does not show a significant relationship. The contribution of learning motivation to mathematical connection ability is greater compared to self-efficacy. These findings indicate that learning motivation plays a more dominant role in improving students’ ability to connect mathematical concepts. Therefore, efforts to enhance students’ motivation are essential in supporting better mathematical understanding.

Eksplorasi Konsep Geometri Pada Motif Ruit Dalam Balutan Kain tenun Ikat sumba Timur

Tue, 02 Jun 2026 23:35:39 +0100

Matematika tidak hanya di pelajari di ruang kelas, tetapi juga harus hadir dalam kehidupan sehari-hari. Misalnya termuat dalam budaya yang ada dalam masyarakat. Contoh budaya dalam masyarakat yang terdapat pembelajaran matematika yaitu pada motif kain tenunan Sumba Timur. Penelitian ini bertujuan untuk mengeksplorasi konsep geometri yang terdapat pada motif ruit dalam balutan kain tenun Sumba Timur. Penelitian menggunakan metode kualitatif dengan pendekatan etnomatematika melalui studi literatur dan analisis visual terhadap motif tenun. Hasil penelitian menunjukan bahwa motif ruit memiliki bentuk dasar menyerupai belah ketupat yang menunjukan konsep simetri pola berulang serta transformasi geometri. Selain itu, motif tersebut juga memiliki makna filosofis yang berkaitan dengan keseimbagan hidup, hubungan manusia, alam leluhur, dan penciptanya serta, nilai-nilai budaya lokal dapat menjadi sumber pembelajaran matematika yang kontekstual dan relevan.

Metode Interpolasi Newton dengan Selisih Terbagi Menggunakan Python dan Excel: Studi Efisiensi dan Visualisasi

Meita Rehania, Ratih Irmawanti, Ari Wibowo — Thu, 04 Jun 2026 05:31:35 +0100

Interpolation is one of the numerical methods used to estimate the value of a function between known data points. One commonly used technique is Newton's divided difference method. This study aims to explore the implementation of this method using two applications, namely Microsoft Excel and Python, and to compare their accuracy, efficiency, and ease of use. The method employed is a descriptive quantitative case study with data consisting of four points (x, f(x)), and it calculates the approximate function value at the point x=2.5. The calculations were performed manually in Excel and automatically through a Python script. The results show that both applications produced the same interpolation value, f(2.5) = 13.3125, with zero error. The graphical visualization in both applications also aids in understanding the function's approximation. Excel is rated superior in ease of use and initial visualization, while Python is more flexible for processing large-scale data and automation. This study recommends the complementary use of both learning and advanced numerical analysis.

Pengaruh Self-Confidence Terhadap Kemampuan Pemecahan Masalah Matematis Siswa

Thu, 04 Jun 2026 05:51:11 +0100

This study aims to investigate and identify the relationship between students’ self-confidence and their ability to solve mathematical problems. Empirical findings indicate that students still demonstrate relatively low ability in solving mathematical problems. Therefore, the background of this study requires further analysis of the factors that contribute to this issue. To examine how the variables are related, this study employs a quantitative approach with a correlational research design. The data collection techniques include questionnaires to measure students’ self-confidence and tests to assess their ability to solve mathematical problems. Data were collected through questionnaires to measure the level of self-confidence and tests based on specific indicators to evaluate problem-solving abilities in mathematics. To test the research hypothesis, the data were analyzed using normality tests and simple linear regression analysis. The findings reveal that self-confidence does not have a significant effect on students’ ability to solve mathematical problems. However, students with higher levels of self-confidence tend to have better conceptual understanding and problem-solving abilities. These results indicate that, in addition to self-confidence, there are other factors that also influence mathematical problem-solving ability, and some of these factors may play a more dominant role.

Faktor–Faktor yang Berhubungan dengan Kejadian Underweight pada Balita dari Keluarga Petani di Kecamatan Limboto

Mon, 08 Jun 2026 04:53:39 +0100

Masalah underweight pada balita masih menjadi tantangan kesehatan masyarakat, khususnya pada komunitas keluarga petani. Kecamatan Limboto merupakan salah satu wilayah dengan prevalensi balita underweight yang tinggi yaitu sebesar 317 kasus pada tahun 2024 dan kembali bertambah menjadi 365 kasus pada tahun 2025. Penelitian ini bertujuan untuk mengetahui hubungan antara faktor kesehatan dan sosial ekonomi dengan kejadian underweight pada balita dari keluarga petani di Kecamatan Limboto. Desain penelitian yang digunakan cross sectional dan teknik sampling purposive sampling. Data diperoleh dari kuesioner yang diisi oleh ibu atau pengasuh utama balita. Analisis data dilakukan menggunakan tabel kontingensi untuk melihat distribusi data dan uji chi-square untuk menguji hubungan antara variabel independen dan kejadian underweight. Hasil penelitian menunjukkan bahwa terdapat hubungan yang signifikan antara riwayat BBLR, riwayat ASI eksklusif, tingkat pengetahuan ibu, pola asuh, dan ketahanan pangan dengan kejadian underweight pada balita. Sementara itu, riwayat penyakit infeksi, tingkat pendidikan ibu dan pendapatan keluarga tidak menunjukkan hubungan yang signifikan. Kesimpulan penelitian ini menunjukkan bahwa faktor kesehatan dan pola pengasuhan memiliki peran penting dalam kejadian underweight pada balita dari keluarga petani, sehingga diperlukan upaya edukasi dan intervensi gizi yang lebih terarah

Perbandingan Perbandingan Pengaruh Problem Based Learning Dan Inquiry Based Learning Terhadap Kemampuan Literasi Numerasi Siswa

Irma Safira, Heni Pujiastuti, Fakhrudin Fakhrudin — Mon, 08 Jun 2026 17:02:55 +0100

This study compares the effect of Problem Based Learning (PBL) and Inquiry Based Learning (IBL) learning models on students' numeracy literacy skills. The objectives of the study were to describe students' numeracy literacy skills using both models, to determine the differences in their effects, and to test the improvement in students' abilities after implementation. The study used a quasi-experimental design involving 60 eighth-grade students of SMP Negeri 1 Padarincang who were divided into two experimental groups. Data were collected through pretests and posttests of numeracy literacy. The results showed that students who learned using the IBL model had higher numeracy literacy skills and more significant improvements compared to the PBL model. It was concluded that the IBL model was more effective in improving students' numeracy literacy.

Kemampuan Komunikasi Matematis Siswa dalam Menyelesaikan Soal Teorema Pythagoras ditinjau dari Minat Belajar

Cahya Ningrum Ma'idah Putri, Sri Subarinah, Tabita Wahyu Triutami — Tue, 09 Jun 2026 00:00:00 +0100

Mathematical communication ability is the student's ability to convey mathematical ideas through writing, symbols, and visual representations. Learning interest is one of the factors that encourages students to be more active in learning and more confident in expressing mathematical ideas. This study aims to describe students' mathematical communication abilities in solving Pythagorean Theorem problems in terms of learning interest. This research uses a qualitative descriptive approach and was conducted in class VIII of SMP Negeri 7 Mataram in the 2025/2026 academic year. The subjects of this study were 42 students, consisting of 11 students with high learning interest, 18 students with moderate learning interest, and 13 students with low learning interest. Furthermore, 8 students were selected for interviews, consisting of 3 students with high interest, 3 with moderate interest, and 2 with low interest. Data collection techniques included questionnaires, tests, and interviews. Data analysis was performed through data reduction, data presentation, and drawing conclusions. The results showed that students' mathematical communication abilities differ at each level of learning interest. Students with high interest tend to be better at expressing ideas and using symbols; students with moderate interest are fairly good but still have difficulty explaining the solution steps; whereas students with low interest have difficulty expressing ideas and explaining the problem-solving process. Thus, learning interest is not always directly proportional to students' mathematical communication abilities.

Pengaruh Model Guided Discovery Learning Berbasis Kearifan Lokal dalam Meningkatkan Pemahaman Konsep SPLDV Siswa

Ayu Alysyum Syam, Aisyah Nursyam, Andi Muhammad Irfan Taufan Asfar — Wed, 10 Jun 2026 18:14:51 +0100

Penelitian ini bertujuan untuk mengetahui pengaruh model Guided Discovery Learning berbasis kearifan lokal dalam meningkatkan pemahaman konsep matematika siswa terutama pada materi Sistem Persamaan Linear Dua Variabel. Penelitian menggunakan ss kuantitatif dengan metode Quasi Eksperimen tipe Non-Equivalent Control Group Group Design. Subjek penelitian adalah seluruh siswa kelas VIII SMP Negeri Satu Atap 3 Cina yang berjumlah 38 siswa, terdiri dari 18 siswa di kelas eksperimen dan 20 siswa dikelas kontrol. Hasil analisis menunjukkan bahwa rata-rata nilai posttest kelas eksperimen meningkat dari 41,3 menjadi 79,1 setelah dibelajarkan menggunakan model Guided Discovery Learning berbasis kearifan lokal, sedangkan kelas kontrol meningkat dari 45,3 menjadi 60,8 setelah dibelajarkan menggunakan metode konvensional. Hasil uji Mann-Whitney menunjukkan nilai signifikansi (Asymp sig 2-tailed) sebesar 0,028 < 0,05, yang berarti terdapat perbedaan peningkatan yang signifikan antara kedua kelas. Temuan ini mengindikasikan bahwa model Guided Discovery Learning berbasis kearifan lokal berpengaruh signifikan terhadap peningkatan pemahaman konsep Sistem Persamaan Linear Dua Variabel pada siswa kelas VIII SMP Negeri Satu Atap 3 Cina.

Kemampuan Pemecahan Masalah SPLDV Ditinjau Dari Kemandirian Belajar Siswa Kelas IX SMPN 1 Narmada

Lalu Abdal Gaffar, Baidowi Baidowi, Eka Kurniawan — Fri, 12 Jun 2026 15:29:30 +0100

Penelitian ini bertujuan untuk mendeskripsikan kemampuan pemecahan masalah sistem persamaan linear dua variabel (SPLDV) ditinjau dari tingkat kemandirian belajar siswa kelas IX SMP Negeri 1 Narmada tahun ajaran 2025/2026. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Subjek penelitian berjumlah 35 siswa kelas IX.1 yang diberikan kuesioner kemandirian belajar dan tes kemampuan pemecahan masalah matematika. Selanjutnya, dipilih 8 siswa berdasarkan tingkat kemandirian belajar dan kemampuan pemecahan masalah matematika untuk dilakukan wawancara secara mendalam pada setiap kategori. Hasil penelitian menunjukkan bahwa siswa dengan kemandirian belajar tinggi cenderung mampu memahami masalah, menyusun rencana penyelesaian, dan melaksanakan rencana dengan baik, namun belum terbiasa melakukan pengecekan kembali terhadap hasil jawaban. Siswa dengan kemandirian belajar sedang cenderung menunjukkan kemampuan yang cukup namun belum konsisten pada setiap tahapan pemecahan masalah. Sementara itu, siswa dengan kemandirian belajar rendah cenderung mengalami kesulitan pada hampir seluruh tahapan pemecahan masalah matematika. Dengan demikian, dapat disimpulkan bahwa tingkat kemandirian belajar berperan penting dalam menentukan kualitas kemampuan pemecahan masalah matematika siswa.

Penerapan Metode North West Corner dalam Distribusi Air Galon pada Depot Air Isi Ulang di Tondano

Meyni Novela Runtu, Indah Chairun Nisa — Fri, 12 Jun 2026 15:41:38 +0100

Distribution of gallon water is one of the important activities in the operation of refill water depots because it isi directly related to fulfilling customer needs. An irregular distribution process can result in higher shipping costs and less efficient vehicle use. This research was conducted at the Om Nyong Refill Water Depot and the Gloria Water Depot in the Tondano area with the aim of determining the allocation of gallon water distribution using the North West Corner (NWC) method. The method used in this research is a quantitative method with an operations research approach to the transportation model. Research data was obtained through direct observation and interviews with depot owners. The data used included the number of galllons supplied, the number of customer requests, and distribution costs to each destination. The research results showed that the North West Corner (NWC) method can assist in allocasting gallon water distribution according to available supply and demand capacity. Based on the calculation results, the distribution costs for the Om Nyong Refill Water Depot Rp 1,612,000 and the Gloria Water Depot Rp 352,000, bringing the total distribution costs to Rp 1,964,000/week. This method makes the distribution process more organized and makes it easier for the depot to determine the number of deliveries to customers.

Distribusi air galon merupakan salah satu kegiatan penting dalam operasional depot air isi ulang karena berhubungan langsung dengan pemenuhan kebutuhan pelanggan. Proses distribusi yang kurang teratur dapat menyebabkan biaya pengiriman menjadi lebih besar dan penggunaan kendaraan menjadi kurang efisien. Penelitian ini dilakukan pada Depot Air Isi Ulang Om Nyong dan Depot Air Gloria yang berada di wilayah Tondano dengan tujuan untuk mengetahui pengalokasian distribusi air galon menggunakan metode North West Corner (NWC). Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan pendekatan riset operasi pada model transportasi. Data penelitian diperoleh melalui observasi dan wawancara langsung dengan pemilik depot. Data yang digunakan meliputi jumlah pasokan galon, junlah permintaan pelanggan, dan biaya distribusi ke setiap lokasi tujuan. Hasil penelitian menunjukkan bahwa metode North West Corner (NWC) mampu membantu proses pengalokasian distribusi air galon sesuai kapasitas supply dan demand yang tersedia. Berdasarkan hasil perhitungan diperoleh biaya distribusi Depot Air Isi Ulang Om Nyong sebesar Rp 1.612.000 dan Depot Air Gloria sebesar Rp 352.000, sehingga total keseluruhan biaya distribusi mencapai Rp 1.964.00/minggu. Dengan adanya metode ini, proses distribusi menjadi lebih teratur dan mempermudah depot dalam menentukan jumlah pengiriman kepada pelanggan.

Kemampuan Pemecahan Masalah Matematika dalam Menyelesaikan Soal Setara PISA Ditinjau dari Gaya Kognitif Siswa

Widya Puspita Putri, Sri Subarinah, Tabita Wahyu Triutami — Mon, 15 Jun 2026 03:45:24 +0100

This study aims to describe students’ mathematical problem-solving abilities in solving PISA-like problems based on the Field Dependent (FD) and Field Independent (FI) cognitive styles. This research employed a qualitative descriptive design. The subjects of the study were 40 students of class VIIIC at SMP Negeri 2 Mataram in the 2025/2026 academic year, consisting of 20 FD students and 20 FI students. Furthermore, six students, comprising three FD students and three FI students, were selected as interview subjects through purposive sampling. The data were collected using a cognitive style test, namely the Group Embedded Figures Test (GEFT), a mathematical problem-solving test in the form of PISA-like problems, and interview guidelines. Data analysis was conducted based on the Miles and Huberman model, which includes data reduction, data display, and conclusion drawing, while also referring to Polya’s four stages of problem solving. The results of the study indicate that: (1) FD students were generally able to perform three stages of Polya’s problem-solving process, namely understanding the problem, devising a plan, and carrying out the plan. However, FD students were generally unable to perform the looking back stage; (2) FI students were generally able to perform all four stages of Polya’s problem-solving process, namely understanding the problem, devising a plan, carrying out the plan, and looking back. The findings of this study are expected to serve as a consideration for teachers in designing mathematics instruction that is aligned with student’s cognitive style characteristics.

Implementasi Metode K-Medoids Clustering untuk Mengelompokkan Kecenderungan Menonton Drama Korea

Suryahaty Aisyah Aulia Kaluku, Muhammad Rezky Friesta Payu, Isran K. Hasan — Mon, 15 Jun 2026 04:16:25 +0100

The phenomenon of watching Korean dramas is increasingly growing among female university students and has the potential to create differences in viewing behavior patterns with varying levels of intensity. This study aims to determine the optimal number of clusters using the Elbow method and to identify respondent grouping patterns based on similarities in Korean drama viewing behavior using the K-Medoids method. In addition, this study evaluates the quality of the formed clusters using an internal validation method, namely the Silhouette Coefficient. The data used are primary data obtained through the distribution of questionnaires to female students at Universitas Negeri Gorontalo, incorporating aspects that represent the intensity and tendencies of Korean drama viewing behavior. The analysis begins with determining the number of clusters using the Elbow method based on changes in the Sum of Squared Errors (SSE). The results show that 4 clusters represent the most representative number of clusters visually. Furthermore, the K-Medoids method is applied to group respondents into 4 clusters based on similarities in their Korean drama viewing behavior. However, the evaluation results using the Silhouette Coefficient indicate that the quality of the formed clusters tends to be low. This is reflected in the variation of silhouette coefficient values, where only one cluster demonstrates good clustering quality, while the others exhibit weaker structures with unclear separation between clusters. This condition indicates the presence of data overlap among clusters, resulting in less distinct cluster boundaries

Analisis Kesalahan Menyelesaikan Soal Cerita SPLDV Berdasarkan Kemampuan Pemecahan Masalah Siswa SMP

Mon, 15 Jun 2026 17:03:21 +0100

Penelitian ini bertujuan untuk mendeskripsikan kesalahan siswa dalam menyelesaikan soal cerita SPLDV berdasarkan kemampuan pemecahan masalah matematis, faktor penyebab kesalahan, serta solusi untuk meminimalkan kesalahan tersebut. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Subjek penelitian ini terdiri atas 6 siswa kelas IX SMP Negeri 5 Kupang, yang masing-masing terdiri dari 2 siswa berkemampuan tinggi, 2 siswa berkemampuan sedang, dan 2 siswa berkemampuan rendah. Teknik Pengumpulan data menggunakan tes, wawancara, dan dokumentasi. Hasil penelitian ini menunjukan bahwa siswa berkemampuan tinggi melakukan kesalahan pada tahap memeriksa kembali jawaban. Siswa berkemampuan sedang melakukan kesalahan pada tahap merencakan penyelesaian dan memeriksa kembali jawaban. Sementara itu, siswa berkemampuan rendah mengalami kesalahan pada seluruh tahapan pemecahan masalah. Faktor penyebab kesalahan meliputi kurangnya ketelitian, rendahnya pemahaman konsep, dan kurang terbiasanya siswa menyelesaikan soal secara sistematis. Solusi yang dapat dilakukan yaitu membiasakan siswa mengikuti tahapan pemecahan masalah, memperkuat pemahaman konsep SPLDV, dan melatih siswa memeriksa kembali hasil pekerjaannya.

Pengaruh Self Confidence terhadap Hasil Belajar Matematika Siswa Kelas 8A SMP Ta’mirul Islam Surakarta

Istna Hani Salami, Fuad Lucky Atmaja — Tue, 16 Jun 2026 06:41:03 +0100

This study aims to analyze the effect of self-confidence on mathematics learning outcomes of grade 8A students at SMP Ta’mirul Islam Surakarta. A quantitative approach was employed with a sample of 30 students selected through simple random sampling. Self-confidence was measured using a Likert scale questionnaire (16 items) based on five Lauster dimensions, while mathematics learning outcomes were obtained from mid-semester examination (UTS) scores. Instrument validity was assessed using Spearman correlation, and reliability was tested using Cronbach’s Alpha coefficient. Results showed that all 16 items were valid (r_count > 0.361) with a Cronbach’s Alpha of 0.854, indicating very high reliability. Spearman correlation analysis yielded ρ = 0.136 with a significance value of p = 0.474 (> 0.05), and simple linear regression analysis produced a regression equation of Y = 57.4787 + 0.1498X with R Square = 0.022 and significance value of F = 0.434 (> 0.05). These results indicate that although there is a positive effect of self-confidence on mathematics learning outcomes, the effect is very weak and statistically not significant. Only 2.2% of the variance in mathematics learning outcomes is explained by self-confidence, while the remaining 97.8% is influenced by other factors, including cognitive ability, teaching methods, learning motivation, learning environment, and the context of Islamic adab-based education that characterizes the research school.

Hubungan Antara Growth Mindset dan Self-Efficacy terhadap Kemampuan Berpikir Kritis Matematis Siswa Kelas XI SMAN 1 Dompu Tahun Ajaran 2025/2026

Muh. Tajul Ma'arif, Syahrul Azmi, Nilza Humaira Salsabila — Wed, 17 Jun 2026 02:33:25 +0100

Konfirmasi Skala Pengukuran Mathematical Well-Being Calon Guru Sekolah Dasar: Studi Psikometrik

Vivi Rachmatul Hidayati, Baiq Yuni Wahyuningsih — Thu, 18 Jun 2026 03:39:43 +0100

This study aimed to develop and validate the reliability and validity of a mathematical well-being scale for prospective elementary school teachers. A quantitative psychometric design was employed, using Confirmatory Factor Analysis (CFA) to test the hypothesized factor structure. The study involved 204 prospective elementary school teachers in Indonesia, who completed a questionnaire assessing seven dimensions of mathematical well-being: accomplishment, cognition, engagement, meaning, perseverance, positive emotions, and relationships. Results indicated that all dimensions had significant factor loadings and good convergent validity, with Average Variance Extracted (AVE) values above 0.50 for most dimensions. Reliability tests showed high coefficients of omega (ω) and alpha (α), and Heterotrait-Monotrait Ratio (HTMT) analysis indicated good discrimination among dimensions. The CFA model also demonstrated acceptable goodness-of-fit, with CFI = 0.93, TLI = 0.95, SRMR = 0.03, and RMSEA = 0.04. These findings confirm that the scale is valid and reliable, offering a useful tool to assess mathematical well-being among prospective elementary school teachers and informing the design of training programs to enhance the quality of mathematics teaching.

Pengaruh Self Confidence terhadap Kemampuan Komunikasi Matematis Siswa Kelas VIII MTsN 1 Mataram Tahun Ajaran 2025/2026

Zavira Mardhatillah, Ketut Sarjana, Eka Kurniawan — Thu, 18 Jun 2026 13:45:18 +0100

This study aims to determine the significant effect of self-confidence on the mathematical communication skills of eighth-grade students at MTsN 1 Mataram in the 2025/2026 academic year. This study used a quantitative method with an ex post facto approach. The population in this study was all 406 eighth-grade students, with a sample of 108 students selected using cluster random sampling. Data collection techniques in this study used a self-confidence questionnaire and a mathematical communication skills test. Data analysis techniques used were descriptive and inferential statistical analysis with the help of SPSS. The results of the data analysis obtained a regression equation of , a correlation coefficient of 0.721, and a coefficient of determination of 52%. This indicates a significant effect of self-confidence on students' mathematical communication skills.

Penerapan Pendekatan Deep Learning Berbasis Gimkit Terhadap Kemampuan Berpikir Kritis

Diah Ayu Rahmawati, Hevy Risqi Maharani — Thu, 18 Jun 2026 14:17:49 +0100

Students' critical thinking skills in mathematics learning are still relatively low, particularly in algebraic operations. This study aimed to analyze the effectiveness of a gimkit web-based deep learning approach in improving students' critical thinking skills. This research employed a quantitative method using a one-group pretest–posttest design involving 27 seventh-grade students of SMP Islam Sultan Agung 4 Semarang. Data were collected through tests, observations, and response questionnaires. The data analysis techniques included normality testing, individual and classical learning mastery analysis, and N-Gain calculation. The results showed a significant improvement in students' scores after the implementation of the treatment. Learning mastery was achieved both individually and classically, and the improvement in critical thinking skills was categorized as high. Furthermore, both teachers and students gave positive responses to the learning process. Therefore, the Gimkit web-based deep learning approach was effective in improving students' critical thinking skills.

Perbandingan Return dan Volatilitas Saham Bank Konvensional dan Syariah di Indonesia dengan Model GARCH(1,1)

Thu, 18 Jun 2026 14:27:20 +0100

This study compares the return and volatility of conventional bank stocks (equal-weighted portfolio: BBCA, BBNI, BBRI, BBTN, BMRI, ARTO) and Islamic bank stock (BRIS) listed on the Indonesia Stock Exchange over the period 2022–2026 using the GARCH(1,1) model. BRIS outperforms in terms of return (+0.0226%/day; cumulative +21.58%) but exhibits higher volatility (2.5102% vs. 1.5527%) and greater shock sensitivity (α = 0.1840 vs. 0.0682). Conventional banks show stronger volatility persistence (α + β = 0.9779; half-life 7.32 days) compared to BRIS (α + β = 0.9029; half-life 2.10 days). Both segments exhibit fundamentally different risk-return profiles, while their moderate correlation (ρ = 0.4488) suggests meaningful portfolio diversification opportunities.

Pengaruh Model Pembelajaran Kooperatif Tipe Teams Games Tournament (TGT) Terhadap Kemampuan Pemecahan Masalah Matematis Siswa di SMP Negeri 2 Kuok

Thu, 18 Jun 2026 16:00:02 +0100

This study aims to investigate the effect of the cooperative learning models Teams Games Tournament (TGT) on the mathematical problem-solving abilities of seventh-grade student at SMP Negeri 2 Kuok. The background of this research stems from students low ability to solve mathematical problems that require logical and systematic thinking. This study employed a quasi-experimental method with a nonequivalent control group design. The research subjects consistend of two classes: the experimental class, which was tought using the TGT model, and the control class, which was taught using conventional methods. The results showed a significant difference in mathematical problem-solving abilities between students taught using the TGT model and those taught using conventional methods. Additionally, there was a significant improvement in students, problem-solving skills after implementing the TGT model. Therefore, the TGT learning model is effective in enchancing students’ mathematical problem-solving abilities.

Pengaruh Model Pembelajaran Problem-Based Learning (PBL) Berbasis Artificial Intellingence (AI) Terhadap Kemampuan Berpikir Kritis Siswa

Al Ahzuri, Astuti Astuti, Zulfah Zulfah — Thu, 18 Jun 2026 16:15:41 +0100

21st-century education demands that students possess critical thinking skills to navigate informational complexities and global dynamics. However, many educational systems remain predominantly focused on content mastery. While content knowledge is essential, the 2018 PISA results indicated that Indonesian students scored below the average in critical thinking proficiency. One effective approach to stimulate these skills is the Problem-Based Learning (PBL) model, which, when supported by technology such as Artificial Intelligence (AI), can enhance personalized learning. This study aims to investigate the effect of integrating AI into the PBL model on students' critical thinking skills at SMA Muhammadiyah Bangkinang. Utilizing a Nonequivalent Control Group experimental design with pre-test and post-test evaluations, the study involved two classes, where the experimental class received AI-based PBL treatment. The results demonstrated a significant increase in the critical thinking skills of the experimental class compared to the control class, yielding an effect size of 1.165, which indicates a high treatment effect. Observations of student activities also revealed enhanced engagement and collaboration. The conclusion of this study confirms that the AI-based PBL model is an innovative and effective method for improving students' critical thinking skills, encouraging them to be more active and creative in problem-solving.The implementation of this method is expected to provide practical contributions to instructional strategies relevant to the 21st century.

Hafalan dan Konstruksi Pengetahuan dalam Pembelajaran Matematika Siswa: Perspektif Konstruktivis

Linda Safitri, Anggun Badu Kusuma, Siti Ayu Wulandari — Fri, 19 Jun 2026 01:52:48 +0100

Praktik menghafal rumus tanpa pemahaman konseptual yang memadai masih mendominasi pembelajaran matematika di Indonesia. Situasi ini tercermin dalam skor PISA 2022 siswa Indonesia, yang hanya mencapai 366—turun 13 poin dari periode sebelumnya dan jauh di bawah rata-rata global. Artikel ini bertujuan untuk: (1) menganalisis secara kritis dominasi pendekatan pembelajaran hafalan dalam pendidikan matematika Indonesia, (2) mengeksplorasi konstruksi pengetahuan sebagai alternatif yang lebih berorientasi pada pemahaman mendalam, dan (3) menelaah bukti empiris yang mendukung keefektifan pendekatan konstruktivis. Tinjauan pustaka sistematis dilakukan terhadap 26 sumber, termasuk jurnal yang terindeks SINTA, publikasi internasional terkemuka, dan buku referensi relevan yang diterbitkan antara tahun 1997 dan 2025. Temuan penelitian secara konsisten menunjukkan bahwa menghafal secara mekanis hanya menghasilkan pengetahuan yang dangkal dan mudah dilupakan, serta sulit diterapkan pada situasi baru. Sebaliknya, pendekatan konstruktivis yang didasarkan pada teori Piaget dan Vygotsky telah terbukti mampu menumbuhkan pemahaman konseptual yang lebih kokoh dan bertahan lama. Model pembelajaran konstruktivis seperti Pembelajaran Berbasis Masalah dan Pembelajaran Penemuan secara konsisten menghasilkan peningkatan yang signifikan dalam penguasaan konsep dan keterampilan pemecahan masalah matematika. Studi ini menyimpulkan bahwa peralihan dari menghafal secara mekanis menuju konstruksi pengetahuan yang bermakna memerlukan perubahan mendasar dalam peran guru dari sekadar penyampai informasi menjadi fasilitator aktif, disertai dengan penguatan keterampilan proses siswa sebagai landasan pembelajaran matematika yang berkelanjutan.

Analisis Kemampuan Pemecahan Masalah Siswa Ditinjau dari Self-Efficacy Pada Materi Transformasi Geometri

M Riki Zikrullah, Arjudin Arjudin, Dwi Novitasari — Sun, 21 Jun 2026 13:16:51 +0100

Penelitian kualitatif deskriptif ini bertujuan mendeskripsikan kemampuan pemecahan masalah matematika materi transformasi geometri berdasarkan tahapan Polya, ditinjau dari tingkat self-efficacy siswa. Subjek penelitian adalah siswa kelas XI SMA Negeri 4 Mataram yang dipilih melalui purposive sampling. Pengumpulan data menggunakan angket, tes, dan wawancara. Hasil penelitian menunjukkan: (1) Siswa dengan self-efficacy tinggi mampu memenuhi keempat tahap Polya (memahami masalah, menyusun rencana, melaksanakan, dan memeriksa kembali) secara utuh dan akurat; (2) Siswa dengan self-efficacy sedang mampu memahami masalah dan merencanakan penyelesaian dengan baik, namun ragu saat pelaksanaan dan tidak memeriksa ulang tanpa instruksi; (3) Siswa dengan self-efficacy rendah kesulitan memahami materi, sehingga terhambat pada tahap perencanaan dan pelaksanaan, serta tidak melakukan pengecekan ulang. Dapat disimpulkan bahwa tingkat self-efficacy berbanding lurus dengan kemampuan siswa dalam memecahkan masalah matematika.

Efektivitas Metode Permainan Class Mart Berbasis Pendekatan PMRI dalam Meningkatkan Minat Belajar

Risma Hanim Mazida, Diana Ermawati , Fitriyah Amaliyah — Sun, 21 Jun 2026 13:40:45 +0100

Penelitian ini didorong oleh pembelajaran matematika yang masih bersifat konvensional dan abstrak, sehingga menyebabkan rendahnya minat belajar dan munculnya kebosanan pada siswa. Penelitian ini bertujuan untuk mengukur besarnya peningkatan yang terjadi pada minat belajar matematika siswa sesudah penerapan pembelajaran menggunakan metode permainan Class Mart berbasis pendekatan Pendidikan Matematika Realistik Indonesia (PMRI). Penelitian menggunakan pendekatan kuantitatif model One-Group Pretest-Posttest Design yang dilaksanakan di SD Negeri Wotan 02 pada periode Maret 2026 hingga April 2026. Data dikumpulkan melalui instrumen angket dan lembar observasi yang telah divalidasi, kemudian dianalisis menggunakan Paired Sample t-Test dan N-Gain Score. Hasil penelitian menunjukkan adanya perbedaan signifikan berupa peningkatan pada minat belajar matematika setelah penerapan metode permainan Class Mart berbasis pendekatan Pendidikan Matematika Realistik Indonesia (PMRI). Analisis statistik menunjukkan perolehan skor N-Gain sebesar 0,56 (kategori Sedang) dan persentase N-Gain sebesar 56,36% menunjukkan bahwa metode ini "Cukup Efektif." Kesimpulannya, metode permainan Class Mart berbasis pendekatan PMRI cukup efektif untuk meningkatkan minat belajar matematika siswa secara signifikan, khususnya pada materi bilangan sampai 1.000.000.

Implementasi Penilaian Portofolio dan Unjuk Kerja dalam Mengukur Kemampuan Berpikir Kritis Matematis Siswa SMP Negeri 4 Banyumas

Sun, 21 Jun 2026 00:00:00 +0100

Critical thinking skills in mathematics are among the essential competencies that need to be developed in junior high school mathematics education. However, assessment practices in mathematics learning still tend to emphasize final outcomes through written examinations, resulting in limited evaluation of students' thinking processes. This study aims to describe the implementation of portfolio assessment and performance assessment in evaluating students' mathematical critical thinking skills at SMP Negeri 4 Banyumas. The study employed a qualitative approach using a descriptive research method. Data were collected through interviews with mathematics teachers and documentation of students' work. Data analysis was conducted descriptively through the stages of data reduction, data display, and conclusion drawing. The findings revealed that performance assessment was implemented through group presentations, classroom problem-solving activities, and final quizzes, while portfolio assessment was conducted through individual assignments and students' work collected throughout the learning process. Both assessment types provided more comprehensive insights into students' mathematical critical thinking skills compared to traditional assessment methods. The study indicates that authentic assessment can support teachers in evaluating students' thinking processes, engagement, and mathematical communication skills more thoroughly.

Perbandingan Penyelesaian SPL dengan Metode Eliminasi Gauss Menggunakan Aplikasi Berbasis Windows dan Android

Novia Rista Ramadhani, Anysa Puspitasari, Nazwa Afrilia Soliha, Ari Wibowo — Mon, 22 Jun 2026 03:27:09 +0100

This study aims to compare the solution of systems of linear equations (SLE) using the Gaussian elimination method through Windows and Android-based applications. This study is a comparative study with a quantitative descriptive approach focusing on the analysis of calculation results and the efficiency of software usage in the context of numerical analysis. Data were obtained from two SLE problem scenarios involving fractional and decimal coefficients, which were then solved using several applications, namely Maple, Microsoft Excel, and the Gauss-Elim calculator. The analysis was conducted based on aspects of accuracy, efficiency, possibility of errors, and ease of use. The results show that Windows and Android-based applications produce the same solutions despite following different solution procedures. Maple demonstrates a high level of accuracy with a systematic and structured solution process. Microsoft Excel requires greater precision because most procedures are carried out manually through elementary row operations. Meanwhile, the Gauss-Elim calculator is the most practical and efficient application because it can display solutions automatically in a short time. Therefore, each application has its own advantages and limitations in supporting SLE solutions using the Gaussian elimination method.

Simulasi Numerik Pengendalian Endemik Demam Berdarah Dengue di Kabupaten Minahasa menggunakan Pendekatan Model SIR-A

Mon, 22 Jun 2026 00:00:00 +0100

Dengue Hemorrhagic Fever (DHF) persists as a critical threat to public health sectors within tropical ecosystems, including Indonesia. This study evaluates the epidemiological fluctuations of Dengue virus transmission in Minahasa Regency by formulating a SIR-A compartmental mathematical model, focusing on the contribution of strengthened clinical interventions to patient recovery rates. The developed dynamic framework incorporates interactions between human cohorts (susceptible, infected, and recovered phases) and an aquatic pre-adult vector group (mosquito larvae/pupae). The investigative procedure involves constructing a system of nonlinear ordinary differential equations, followed by establishing equilibrium states, calculating the basic reproduction number () threshold, and executing computational simulations via Wolfram Mathematica. Computational outputs demonstrate that an escalation in mosquito larvae density correlates positively with accelerated disease transmission rates. Conversely, optimizing clinical control by increasing the recovery parameter significantly reduces the active infected cohort and drives the system’s trajectory toward a stable disease-free equilibrium state. These insights indicate that accelerating patient care effectiveness and upgrading healthcare infrastructure are crucial policy instruments for suppressing DHF endemic risks in Minahasa Regency.

Pengaruh Kecemasan Matematika terhadap Kemampuan Pemecahan Masalah Berbasis Tahapan Polya di MAN 1 Karanganyar

Mukaromah Mafaza, Fuad Luky Atmaja — Mon, 22 Jun 2026 05:52:26 +0100

Tujuan dilakukannya penelitian ini ialah guna menganalisis pengaruh kecemasan matematika terhadap kemampuan memecahkan permasalahan pada materi Sistem Persamaan Linear Dua Variabel (SPLDV) berdasarkan tahapan Polya pada siswa kelas XD MAN 1 Karanganyar. Penelitian ini memanfaatkan jenis pendekatan kuantitatif yang memakai desain korelasional-regresi. Sebanyak 36 siswa menjadi subjek pada penelitian ini yang dipilih dengan memanfaatkan teknik purposive sampling. Data-data kecemasan matematika dikumpulkan dengan memakai angket skala Likert 12 butir yang mencakup dimensi fisiologis, kognitif, dan afektif (α = 0,852), sedangkan kemampuan pemecahan masalah diukur melalui tes uraian 5 butir soal berdasarkan empat tahapan Polya. Proses menganalisis data pada penelitian ini dilaksanakan dengan memakai regresi linear sederhana yang memanfaatkan bantuan R Studio dan Microsoft Excel. Hasil penelitian memperlihatkan bahwasanya sebagian besar siswa masuk pada golongan kecemasan sedang (69,44%) dan kemampuan pemecahan masalah kategori kurang (44,44%) dengan rata-rata nilai 64,33. Hasil uji regresi menunjukkan bahwa kecemasan matematika tidak memberi pengaruh yang signifikan pada kemampuan memecahkan permasalahan SPLDV (r = 0,028; R² = 0,0008; F = 0,026; p = 0,873 > 0,05). Temuan ini mengindikasikan bahwa rendahnya kemampuan pemecahan masalah siswa lebih dipengaruhi oleh faktor-faktor lain di luar kecemasan matematika, seperti penguasaan konsep, strategi belajar, dan kualitas pembelajaran.

Analisis Kecemasan Matematika dan Akurasi Pemahaman Konsep Guru Sekolah Dasar dalam Perspektif Faktor Demografis

Yohana Dwi Kristiani Sinaga, Kandida Maro Rayo — Tue, 23 Jun 2026 04:54:13 +0100

Mathematics anxiety is experienced not only by students but also by elementary school teachers and may affect instructional quality, particularly conceptual understanding accuracy. This study aimed to (1) identify teachers’ levels of mathematics anxiety, (2) examine factors associated with mathematics anxiety, and (3) analyze its effect on conceptual understanding accuracy. A quantitative correlational-regression design was employed involving 85 elementary school teachers from Teacher Working Group (KKG) Cluster 1, Sintang District. Data were collected through a mathematics anxiety questionnaire and a conceptual understanding test and analyzed using descriptive statistics, t-tests, Pearson correlation, and multiple linear regression. The results showed that teachers’ mathematics anxiety was at a moderate level. Significant differences were found based on gender and grade level taught, whereas no significant relationship was found with teaching experience. Self-confidence was negatively associated with mathematics anxiety. Furthermore, mathematics anxiety had a significant negative effect on conceptual understanding accuracy after controlling for other variables. The regression model explained 35% of the variance in conceptual understanding accuracy (R² = 0.35), with mathematics anxiety emerging as a significant negative predictor (β = −0.38, p < 0.001). These findings highlight the importance of addressing teachers’ affective factors in professional development.

Inovasi Media Pembelajaran Android Berbasis Construct 2 pada Materi SPLDV untuk Mendukung Pembelajaran Matematika Interaktif

Tue, 23 Jun 2026 13:38:36 +0100

This research is motivated by students' difficulties in understanding and solving Linear Equation System of Two Variables (SPLDV) problems. This study aims to develop a valid, practical, and effective Android-based learning media using Construct 2 on SPLDV material to support interactive mathematics learning. This research employs a Research and Development (R&D) method, utilizing a 4D model (Define, Design, Develop, and Disseminate). The research subjects were 30 eighth-grade students at MTsN Gowa. The instruments used included validation sheets, teacher and student response questionnaires, as well as pre-test and post-test. The results showed that the learning media met the very valid criteria with an average expert assessment percentage of 94.52%. The media was also declared very practical based on 100% learning implementation, 92.50% teacher response, and 89.56% student response. Furthermore, the media proved effective with a classical completeness of 76.67% and an increase in average student learning outcomes from 27.17 to 80.50. In conclusion, this Android-based learning media is feasible and effectively used as an interactive learning alternative for SPLDV material.

Peningkatan Pemahaman Konsep Trigonometri melalui Pembelajaran Discovery Learning

Muh. Afdal Nur, Mas’ud Badolo, Arifuddin Arifuddin — Mon, 29 Jun 2026 00:00:00 +0100

This classroom action research aimed to improve students' conceptual understanding of trigonometry through the implementation of the Discovery Learning model. The study was motivated by the low conceptual understanding of students, particularly in explaining concepts, connecting trigonometric concepts, and applying them to various problem-solving situations. The research was conducted in Class X Unggul 3 of SMA Negeri 3 Parepare during the 2025/2026 academic year and involved 32 students. The study employed a mixed-methods approach and was carried out in three cycles, each consisting of planning, action, observation, and reflection stages. Data were collected through conceptual understanding tests, observations, interviews, and documentation. The results showed a consistent improvement in students’ conceptual understanding across all indicators. The average conceptual understanding score increased from 56 in the pre-cycle stage to 68 in Cycle I, 78 in Cycle II, and 88 in Cycle III. Learning mastery also improved from 31.25% in the pre-cycle stage to 56.25% in Cycle I, 78.13% in Cycle II, and 93.75% in Cycle III. These findings indicate that the implementation of the Discovery Learning model contributed to the improvement of students’ conceptual understanding and learning mastery in trigonometry through active engagement in the process of discovering and constructing mathematical concepts.

Eksplorasi Konsep Segitiga pada Geometri Euclid dan Non-Euclid untuk Meningkatkan Pemahaman Siswa SMA

Tue, 23 Jun 2026 16:58:52 +0100

This study aims to analyze students' conceptual understanding of triangle concepts in Euclidean and Non-Euclidean geometry through the implementation of exploratory learning. The study was conducted using a quantitative descriptive approach involving 30 twelfth-grade students at SMA Methodist Antiokhia Pancur Batu. Data were collected through observation and a Likert-scale questionnaire consisting of 20 statement items based on four indicators, namely understanding of Euclidean geometry, understanding of Non-Euclidean geometry, conceptual understanding of triangles, and cognitive impact of learning. The data were analyzed using descriptive statistical techniques by calculating the mean score of each indicator, which generally fell into the high category (range 2.98–3.41), with understanding of Non-Euclidean geometry still slightly lagging behind the other three indicators. The key finding of this study is that exploratory learning effectively encourages students to build a deeper conceptual understanding of triangles through observation, analysis, and discussion, rather than relying on rote procedural memorization. More importantly, integrating Euclidean and Non-Euclidean geometry within a single learning sequence was shown to broaden students' way of thinking: students came to understand not only the properties of triangles on flat planes but also that these properties can change on curved surfaces, resulting in a more flexible and contextual understanding of geometry. These findings imply that an integrative approach combining Euclidean and Non-Euclidean geometry has potential as an alternative strategy for teaching geometry at the senior high school level to foster students' critical and analytical thinking skills, while also addressing the gap in Non-Euclidean geometry instruction that remains rarely introduced at the secondary education level.

Pengaruh Adversity Quotient (AQ) terhadap Kemampuan Numerasi Matematis Siswa Kels VIII SMPN 1 Batulayar

Nazwa Risfaida, Ketut Sarjana, Ulfa Lu'luilmaknun — Wed, 24 Jun 2026 04:09:26 +0100

Rendahnya kemampuan numerasi matematis siswa sebagaimana yang tercermin pada hasil PISA 2022 serta observasi awal di SMPN 1 Batulayar masih menjadi masalah yang sering dijumpai. Faktor non kognitif seperti Adversity Quotient (AQ) diduga turut memengaruhi kemampuan siswa dalam menyelesaikan permasalahan numerasi matematis. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh AQ terhadap kemampuan numerasi matematis siswa kelas VIII SMPN 1 Batulayar tahun ajaran 2025/2026 dan seberapa besar pengaruhnya. Penelitian ini menggunakan pendekatan ex post facto dengan teknik sampel jenuh sehingga seluruh populasi dijadikan sampel penelitian yang berukuran 72 orang. Instrumen dalam penelitian ini adalah angket adversity quotient serta tes kemampuan numerasi matematis. Dengan menggunakan analisis regresi linier sederhana dan diperoleh hasil penelitian yaitu 1) Terdapat pengaruh yang positif dan signifikan antara AQ dengan kemampuan numerasi matematis siswa kelas VIII SMPN 1 Batulayar tahun ajaran 2025/2026 serta 2) Besarnya pengaruh antara AQ dengan kemampuan numerasi matematis siswa kelas VIII SMPN 1 Batulayar tahun ajaran 2025/2026 ialah sedangkan sisanya yaitu dipengaruhi oleh faktor lain yang tidak diteliti dalam penelitian ini.

Integrasi Kontuktivisme Kognitif dan Sosial sebagai Landasan Pembelajaran Matematika Abad Ke-21

Fathur Satya Adiguna, Rizki Nizar Abdillah, Anggun Badu Kusuma — Thu, 25 Jun 2026 15:57:18 +0100

Pembelajaran matematika abad ke-21 menuntut pendekatan pembelajaran yang tidak hanya berorientasi pada penguasaan konsep, tetapi juga mampu mengembangkan keterampilan berpikir kritis, komunikasi, kolaborasi, dan kreativitas peserta didik. Salah satu landasan teoretis yang relevan untuk menjawab tuntutan tersebut adalah konstruktivisme. Artikel ini bertujuan untuk menganalisis integrasi konstruktivisme kognitif dan konstruktivisme sosial sebagai landasan pembelajaran matematika abad ke-21. Penelitian menggunakan metode Systematic Literature Review (SLR) dengan pendekatan deskriptif kualitatif. Data diperoleh melalui kajian berbagai artikel ilmiah nasional dan internasional yang berkaitan dengan konstruktivisme kognitif, konstruktivisme sosial, dan pembelajaran matematika. Analisis dilakukan melalui tahapan identifikasi, seleksi, evaluasi, dan sintesis literatur. Hasil kajian menunjukkan bahwa konstruktivisme kognitif berkontribusi dalam pengembangan pemahaman konsep, penalaran, dan kemandirian belajar melalui proses konstruksi pengetahuan secara individual. Sementara itu, konstruktivisme sosial berperan dalam memperkuat pembelajaran melalui interaksi sosial, kolaborasi, dan scaffolding. Integrasi kedua perspektif tersebut menghasilkan pembelajaran yang lebih aktif, bermakna, dan berpusat pada peserta didik, serta mendukung pengembangan kompetensi abad ke-21. Dengan demikian, integrasi konstruktivisme kognitif dan sosial dapat menjadi landasan teoretis yang kuat dalam merancang pembelajaran matematika yang adaptif terhadap tuntutan pendidikan masa kini.

Pengembangan E-Modul Geometri Berbasis Etnomatematika Melalui Eksplorasi Kain Tenun di SMPN 6 Mataram

Destiana Safitri, Amrullah Amrullah, M. Gunawan Supiarmo — Fri, 26 Jun 2026 05:34:00 +0100

The low level of students’ understanding of geometric concepts and the lack of contextual teaching materials
make mathematics learning tend to be abstract and less engaging. In addition, mathematics learning in
schools is still rarely connected to local culture that is closely related to students’ daily lives. Learning that
integrates local culture can create a more meaningful learning experience for students. Ethnomathematicsbased
e-modules can visualize geometric concepts through cultural exploration as a learning medium. This
study aimed to describe the development and determine the validity of an ethnomathematics-based geometry
e-module integrating Sasak culture through woven fabric exploration for seventh-grade students at SMPN 6
Mataram. The research employed a Research and Development (R&D) approach using Thiagarajan’s 4D
model, consisting of the define, design, develop, and disseminate stages. Data from material and media expert
evaluations were analyzed using Aiken’s V formula. The results indicated that the developed e-module was
highly valid, with a media validity score of 0.86, a material validity score of 0.82, and an overall average
validity score of 0.84. Therefore, the interactive website-based e-module is theoretically highly valid for use
as a supplementary teaching material in mathematics learning.

Pengaruh Locus of Control Terhadap Kemampuan Pemecahan Masalah Matematika Siswa Kelas XI MIPA di SMA Negeri 3 Mataram Tahun Ajaran 2023/2024

Dwi Nuraini, Arjudin Arjudin, Amrullah Amrullah — Sat, 27 Jun 2026 00:21:34 +0100

Penelitian ini bertujuan untuk mengetahui pengaruh locus of control terhadap kemampuan pemecahan masalah matematika siswa kelas XI MIPA SMA Negeri 3 Mataram tahun ajaran 2023/2024. Penelitian ini merupakan penelitian kuantitatif dengan pendekatan ex-post facto. Populasi penelitian berjumlah 180 siswa kelas XI MIPA, dengan sampel sebanyak 45 siswa yang dipilih menggunakan teknik proportionate stratified cluster random sampling. Data dikumpulkan melalui angket locus of control dan tes uraian kemampuan pemecahan masalah matematika. Data dianalisis menggunakan statistik deskriptif dan statistik inferensial berupa regresi linear sederhana. Hasil penelitian menunjukkan bahwa locus of control dan kemampuan pemecahan masalah matematika siswa secara umum berada pada kategori sedang. Hasil uji hipotesis menunjukkan adanya pengaruh positif dan signifikan locus of control terhadap kemampuan pemecahan masalah matematika siswa, yang ditunjukkan oleh persamaan regresi Y = 15,336 + 0,636X , dan uji F nilai signifikannya adalah Sig. = 0,000 < 0,05. Nilai koefisien determinasi (R²) sebesar 0,491, menunjukkan bahwa locus of control memberikan kontribusi sebesar 49,1% terhadap kemampuan pemecahan maslaah matematika siswa. Hasil ini menunjukkan bahwa siswa dengan locus of control yang lebih baik cenderung memiliki kemampuan pemecahan masalah matematika yang lebih baik. Oleh karena itu, locus of control memiliki peran penting dalam meningkatkan kemampuan pemecahan masalah matematika siswa.

Pemodelan Dinamika Viralitas Konten Digital Di Kalangan Mahasiswa Jurusan Matematika Menggunakan Model Susceptible-Infected-Recovered (SIR)

Sat, 27 Jun 2026 00:33:37 +0100

Perkembangan media sosial menyebabkan penyebaran informasi dan konten digital berlangsung sangat cepat, termasuk di kalangan mahasiswa. Viralitas konten digital terjadi ketika suatu informasi dibagikan secara berulang oleh pengguna media sosial sehingga menjangkau banyak individu dalam waktu tertentu. Penelitian ini bertujuan untuk menganalisis dinamika viralitas konten digital di kalangan mahasiswa jurusan pendidikan matematika menggunakan model Susceptible–Infected–Recovered (SIR). Penelitian ini menggunakan pendekatan kuantitatif berbasis pemodelan matematika dengan data yang diperoleh melalui penyebaran kuesioner kepada mahasiswa pendidikan matematika yang aktif menggunakan media sosial. Populasi dibagi ke dalam tiga kelompok, yaitu Susceptible (S), Infected (I), dan Recovered (R). Model matematika yang digunakan dinyatakan sebagai , dan . Berdasarkan hasil normalisasi data diperoleh kondisi awal S = 0.39, I = 0.26 dan R = 0.35 dengan parameter dan. Simulasi numerik dilakukan menggunakan software R Studio untuk melihat perubahan populasi dari waktu ke waktu. Hasil simulasi menunjukkan bahwa kelompok Susceptible mengalami penurunan, kelompok Infected meningkat pada tahap awal kemudian menurun secara perlahan, sedangkan kelompok Recovered mengalami peningkatan secara bertahap. Hasil penelitian menunjukkan bahwa viralitas konten digital bersifat sementara karena dipengaruhi oleh perubahan minat pengguna media sosial terhadap suatu konten.

Penggunaan Media Pembelajaran Interaktif Quizizz Berbasis Paper mode Untuk Meningkatkan Minat Belajar Matematika Siswa

Putri Anggun, Rusdi Rusdi, Tasnim Rahmat, Nola Nari — Sat, 27 Jun 2026 00:50:32 +0100

Penelitian ini dilatarbelakangi oleh rendahnya minat belajar matematika siswa yang diduga disebabkan oleh kurangnya variasi penggunaan media pembelajaran berbasis teknologi yang interaktif dan menarik. Selain itu, penggunaan media pembelajaran yang bergantung pada perangkat handphone sering menimbulkan gangguan sehingga proses pembelajaran menjadi kurang efektif. Oleh karena itu, penelitian ini bertujuan untuk mengetahui peningkatan minat belajar matematika siswa melalui penggunaan media interaktif pembelajaran Quizizz berbasis paper mode pada siswa kelas VII MTsN 10 Agam. Jenis penelitian yang digunakan adalah pra-eksperimen dengan desain one group pretest-posttest. Populasi penelitian adalah siswa kelas VII.1 dan VII.2, sedangkan sampel penelitian adalah kelas VII.1 yang dipilih menggunakan teknik simple random sampling. Instrumen penelitian berupa angket minat belajar matematika yang telah divalidasi dan diuji reliabilitasnya. Teknik analisis data menggunakan uji t dan uji N-Gain. Hasil penelitian menunjukkan bahwa rata-rata skor minat belajar matematika siswa sebelum perlakuan sebesar 112,65 dan meningkat menjadi 140,20 setelah diberikan perlakuan. Berdasarkan hasil analisis uji t diperoleh bahwa peningkatan terdapat minat belajar matematika siswa setelah menggunakan media pembelajaran interaktif Quizizz berbasis paper mode. Selain itu, hasil uji N-Gain sebesar 0,58 menunjukkan bahwa peningkatan minat belajar siswa berada pada kategori sedang. Dengan demikian, penggunaan media pembelajaran interaktif Quizizz berbasis paper mode dapat meningkatkan minat belajar matematika siswa.

Pengaruh Pembelajaran Matematika Realistik Berbasis Macromedia Flash Terhadap Kemampuan Pemecahan Masalah SPLDV

Nilam Sari, Sudi Prayitno, Dwi Novitasari — Sun, 28 Jun 2026 04:38:48 +0100

This study aimed to determine the effect of realistic mathematics education based on Macromedia Flash on eighth-grade students’ problem-solving ability in Systems of Linear Equations in Two Variables at MTsN 1 Bima in the 2025/2026 academic year. The study employed a quantitative quasi-experimental design. The population consisted of 110 eighth-grade students of MTsN 1 Bima. The samples were selected through cluster random sampling. Class VIII.1, consisting of 31 students, was assigned as the experimental class and received realistic mathematics education based on Macromedia Flash, while class VIII.4, consisting of 25 students, was assigned as the control class and received conventional learning based on Macromedia Flash. The research instrument was a posttest consisting of three essay questions. The data were analyzed using the t-test. The results showed that the average score of students’ problem-solving abilities in the experimental class was 85.937, while the control class obtained 79.16. Hypothesis testing showed that the = 4.461 and = 2.004 at a significance level of 0.05 (2-tailed). This finding indicates a significant difference between the two classes. Therefore, it can be concluded that realistic mathematics education based on Macromedia Flash significantly affects students’ problem-solving ability.

Modeling Online Loan Risk Dynamics with SEIQRL, Regulation, and Financial Literacy Analysis in Indonesia

Sun, 28 Jun 2026 00:00:00 +0100

This study examines the dynamics of risky online lending behavior in Indonesia using the SEIQRL mathematical model. The model extends the SEIR approach by adding Quarantined (Q) and Literate (L) compartments to represent regulatory intervention and financial literacy. This study aims to construct the SEIQRL model, analyze the risk-free equilibrium point, calculate the basic reproduction number (R₀), and evaluate the effects of regulation and financial literacy on the spread of risky online lending behavior. The method uses a quantitative approach based on mathematical modeling and numerical simulation with Wolfram Mathematica. The results show that the baseline scenario produces an R₀ value of 6.1538, indicating that risky online lending behavior can spread strongly within the population. Strong regulation and strong literacy scenarios reduce the risk, but they do not fully control its spread. The combined regulation and literacy scenario produces an R₀ value of 0.8696, meaning the risk can be controlled because R₀ < 1. These findings show that controlling risky online lending cannot rely only on access restrictions or service blocking. Early financial literacy must also serve as a preventive strategy. The SEIQRL model can support policy analysis for controlling online lending risks in Indonesia.

Model Matematika Terhadap Dinamika Kriminalitas di Provinsi Sumatera Utara

Rifka Annaria Sibuea, Tri Andri Hutapea — Mon, 29 Jun 2026 03:18:44 +0100

Crime is a social problem that can affect social stability, the economy, and public safety. Factors such as education, social interaction, and economic conditions play an important role in the spread of crime. This study aims to analyze a mathematical model of crime dynamics in North Sumatra Province, which is divided into five sub-populations, namely SC₁C₂PR (Susceptible, Criminal Suspect, Criminal Defendant, Prison, Recovered), taking into account the influence of education programs. The analysis conducted involves determining the equilibrium point, calculating the basic reproduction number (R₀), and analyzing stability using the linearization method and the Routh-Hurwitz criterion. Based on the analysis results, the basic reproduction number R₀ > 1 was obtained, so that the model had two equilibrium points, namely an unstable crime-free equilibrium point and a locally asymptotically stable equilibrium point with crime. This condition represents that one criminal can give rise to more than one new criminal individual, so that criminal activity will persist and spread in society until it reaches a stable state of crime. The simulation results show that effective and equitable education programs can reduce crime rates, but they are not sufficient to achieve a crime-free environment without restricting social interaction. Therefore, other programs are needed to reduce crime rates in North Sumatera.

Optimization of Clean Water Distribution Networks at the Unima FMIPA Campus Using the Minimum Spanning Tree Method

Christari Lois Palit, Dyrel Samuel Lion Kusnadi — Mon, 29 Jun 2026 03:38:39 +0100

The availability of clean water within higher education institutions is highly crucial to support the operations and convenience of the academic community. Issues regarding limited access to clean water were identified within the Faculty of Mathematics and Natural Sciences (FMIPA) at the State University of Manado, particularly in the Department of Mathematics Education. This study aims to model the clean water distribution network in FMIPA as a weighted graph and determine the optimal distribution path with minimum total pipe length using the Minimum Spanning Tree (MST) method via Prim’s Algorithm. This operations research-based quantitative study mapped six main nodes encompassing the water tank and departmental buildings. Distance data were obtained through digital map observations and Google Earth based on realistic piping pathways. The results indicate that optimization using Prim’s Algorithm produces an efficient single network configuration with the route: . This network successfully eliminates path redundancy, achieving a minimum total pipe length of 175 meters. Through this modeling, the Mathematics Education Department secures a reliable water supply delivered from the Science Education Building with a distance efficiency of only 25 meters. The implications of this research provide a practical recommendation for the university administration to efficiently optimize the allocation of plumbing material budgets.

Pengaruh Penerapan Model Problem-Based Learning melalui LKPD Berbasis Kebudayaan Daerah terhadap Kemampuan Numerasi Siswa Kelas X SMAN 3 Mataram

Nisa Husniatissibhi, Ketut Sarjana, Eka Kurniawan — Mon, 29 Jun 2026 04:01:27 +0100

Numeracy skills are essential competencies that enable students to understand, process, and interpret mathematical information in various real-life contexts. However, students’ numeracy skills still need improvement, particularly in statistics learning. This study aimed to determine the effect of implementing the Problem-Based Learning (PBL) model through local culture-based Student Worksheets (LKPD) on the numeracy skills of tenth-grade students at SMAN 3 Mataram. This study employed a quasi-experimental method using a posttest-only control group design. The sample consisted of 78 students divided into an experimental class and a control class. Numeracy data were collected using a test instrument that had been validated by experts. The findings showed that students who learned through PBL with local culture-based LKPD achieved higher numeracy skills than those who received direct instruction. The results of the independent sample t-test indicated a significant difference between the two groups, with a very high level of instructional effect. These findings suggest that the implementation of PBL through local culture-based LKPD is effective in supporting the improvement of students’ numeracy skills in statistics learning.

Analisis Kesalahan Siswa Kelas VIII SMPN 4 MATARAM Tahun Ajaran 2025/2026 Dalam Menyelesaikan Soal Cerita Matematika Ditinjau Dari Self Efficacy

Qorina Tasya Billa, Syahrul Azmi, Eka Kurniawan — Mon, 29 Jun 2026 04:51:21 +0100

Penelitian ini bertujuan untuk untuk mendeskripsikan kesalahan siswa kelas VIII SMPN 4 Mataram tahun ajaran 2025/2026 dalam menyelesaikan soal cerita matematika ditinjau dari self-efficacy. Sampel penelitian terdiri atas 91 siswa kelas VIII yang dipilih melalui teknik purposive sampling, dengan 6 siswa mewakili kategori kepercayaan diri tinggi, sedang, dan rendah sebagai subjek wawancara mendalam. Data dikumpulkan melalui angket, tes, dan wawancara semi terstruktur. Dalam mengidentifikasi jenis kesalahan serta penyebab kesalahan siswa dalam menyelesaikan soal cerita menggunakan kategori kesalahan berdasarkan teori Newman. Hasil penelitian menunjukkan bahwa siswa dengan self-efficacy tinggi cenderung melakukan kesalahan karena ketidaktelitian, sedangkan siswa dengan self-efficacy sedang lebih banyak melakukan kesalahan daripada mereka yang memiliki self-efficacy tinggi karena meragukan kemampuan saat menghadapi masalah matematika. Di sisi lain, siswa dengan self-efficacy rendah sering kali mengalami kebuntuan kognitif dan menyerah sebelum mencoba tahap transformasi matematika.

Pemodelan Graf Berbobot untuk Penentuan Prioritas Jarak dan Estimasi Waktu Distribusi MBG dari SPPG ke Sekolah Mitra di Medan Tuntungan Menggunakan Algoritma Dijkstra

Evelyn Silalahi, Alvin Hafiz, Suvriadi Panggabean — Mon, 29 Jun 2026 07:28:47 +0100

Program Makan Bergizi Gratis (MBG) membutuhkan sistem distribusi yang tepat waktu dan efisien dari Satuan Pelayanan Pemenuhan Gizi (SPPG) ke sekolah-sekolah mitra guna menjaga kualitas dan kehangatan makanan. Penelitian ini bertujuan untuk memodelkan graf berbobot dalam menentukan prioritas jarak dan mengestimasi waktu distribusi MBG dari SPPG Simpang Selayang ke 10 sekolah dasar di Kecamatan Medan Tuntungan. Metode kuantitatif diterapkan dengan mengimplementasikan Algoritma Dijkstra pada jaringan jalan nyata berbasis OpenStreetMap (OSM). Data koordinat lokasi dikumpulkan melalui web scraping dan divalidasi menggunakan bounding box administratif. Untuk memberikan gambaran operasional yang lebih realistis, analisis sensitivitas dilakukan pada tiga skenario kecepatan rata-rata, yaitu 20, 30, dan 40 km/jam. Hasil komputasi menunjukkan bahwa SD NEGERI 065012 menjadi prioritas distribusi pertama dengan jarak rute terpendek (1,219 km), sedangkan SD N 060972 berada pada prioritas terakhir (5,763 km). Pada skenario kecepatan moderat (30 km/jam), rata-rata waktu tempuh distribusi ke seluruh sekolah adalah 6,4 menit. Penelitian ini menyimpulkan bahwa penerapan Algoritma Dijkstra berbasis jaringan jalan OSM terbukti lebih efektif dan realistis dalam mengoptimalkan rute distribusi dibandingkan perhitungan jarak garis lurus (Haversine), sehingga dapat menjadi acuan pengambilan keputusan logistik yang efisien bagi pengelola program MBG.

Pengaruh Model Project-Based Learning Terhadap Kemampuan Pemecahan Masalah Matematika Siswa Kelas VIII SMP

Hikmatul Laili, Laila Hayati, Ulfa Lu'luilmaknun — Mon, 29 Jun 2026 08:51:54 +0100

This study is motivated by the low level of student participation in the learning process and their limited mathematical problem-solving skills, particularly in number pattern material. The purpose of this study is to determine the effect of the Project-Based Learning (PjBL) model on the mathematical problem-solving abilities of eighth-grade students at SMP Negeri 3 Mataram. This research employed a quasi-experimental design using a posttest-only control group design. The population consisted of all eighth-grade students totaling 119 students, with a sample of 61 students selected randomly. Class VIII-1 was assigned as the experimental group using the PjBL model, while class VIII-2 served as the control group using direct instruction. Data were collected through observation and essay tests and analyzed using normality, homogeneity, and independent sample t-test, followed by effect size analysis. The results showed that the average posttest score of the experimental class (75.27) was higher than that of the control class (51.25). The data were normally distributed (Sig. experimental = 0.500 > 0.05; control = 0.096 > 0.05) and homogeneous (Sig. = 0.178 > 0.05). The t-test result indicated a significant difference (Sig. (2-tailed) = 0.000 < 0.05). Furthermore, the effect size value (Cohen’s d = 1.822) indicates a high effect, meaning that the PjBL model has a strong influence on students' mathematical problem-solving abilities. In conclusion, the Project-Based Learning model significantly improves students' mathematical problem-solving skills in number pattern material.

Evaluasi Performa Model Peramalan Harga Beras Medium Bulanan di Jawa Barat: Pendekatan Expanding Window Out-of-Sample

Aditya Rifki Ramadhan, Yohana Herlina Putri — Mon, 29 Jun 2026 12:56:05 +0100

Studi peramalan harga beras menengah di Jawa Barat selama ini sebagian besar mengandalkan pendekatan satu model tanpa evaluasi out-of-sample yang sistematis, sehingga kinerja prediktif komparatif dari berbagai model deret waktu yang bersaing dalam kondisi peramalan yang realistis belum diteliti. Penelitian ini mengatasi kesenjangan tersebut dengan membandingkan lima model deret waktu, yaitu Seasonal Naïve, ARIMA (1,1,1), Additive Holt-Winters ETS, SARIMA (0,1,1) (0,1,1,12), dan SARIMA (1,1,1) (1,1,1,12) untuk harga beras medium bulanan di Provinsi Jawa Barat. Data diperoleh dari Pusat Informasi Harga Pangan Strategis Nasional (PIHPS) yang mencakup periode April 2017 hingga November 2025, terdiri dari 104 pengamatan bulanan. Kinerja model dievaluasi menggunakan prosedur jendela yang diperluas selama periode uji 21 bulan (Maret 2024 – November 2025) berdasarkan tiga metrik akurasi: MAE, RMSE, dan MAPE. Hasil menunjukkan bahwa ARIMA (1,1,1) secara konsisten mengungguli semua model pesaing, dengan mencapai MAE sebesar Rp 92,63/kg, RMSE sebesar Rp 169,47/kg, dan MAPE sebesar 0,62%, yang diklasifikasikan sebagai sangat akurat berdasarkan kriteria Lewis (1982). Temuan ini menunjukkan bahwa, dalam periode evaluasi yang ditandai oleh gangguan pasokan akibat El Niño dan perubahan kebijakan HET pemerintah, spesifikasi ARIMA non-musiman mencapai akurasi out-of-sample yang lebih unggul dibandingkan model SARIMA yang memasukkan komponen musiman historis, pola ini sejalan dengan kemungkinan bahwa gangguan musiman selama periode anomali membatasi keunggulan prediktif spesifikasi model musiman. Model dengan kinerja terbaik kemudian diterapkan untuk meramalkan harga beras untuk periode Desember 2025 - November 2026, dengan proyeksi harga yang relatif stabil di sekitar Rp. 14.809/kg. Temuan ini memberikan informasi awal yang dapat ditindaklanjuti bagi pemangku kepentingan regional dalam pemantauan dan pengelolaan harga beras jangka pendek.

Comparative Mathematical Modeling of Coffee Shelf-Life Using Linear Regression and Ensemble Learning under Simulated Storage Conditions

Lingga Gita Dwikasari, Dilla Afriansyah — Mon, 29 Jun 2026 15:11:13 +0100

management. However, comparative studies evaluating interpretable statistical models and ensemble learning algorithms for coffee shelf-life prediction remain limited, particularly using simulation-based datasets. This study compared the predictive performance of Multiple Linear Regression (MLR), Random Forest Regression (RFR), and Gradient Boosting Regression (GBR) using a simulation-based dataset of 400 observations representing realistic storage conditions. Model performance was evaluated using Mean Absolute Error (MAE), Root Mean Square Error (RMSE), and the coefficient of determination (R²). MLR achieved the best performance with the lowest MAE (10.01 days), the lowest RMSE (12.55 days), and the highest R² (0.8649), outperforming both ensemble learning models. Feature importance analysis consistently identified storage temperature as the most influential predictor of coffee shelf-life. These findings demonstrate that increased model complexity does not necessarily improve predictive accuracy and support the use of simulation-based datasets for developing predictive models prior to validation with experimental data.

Optimization of Coffee Production and Distribution under Multi-Demand Scenarios: A Linear Programming and Dual Analysis Approach

Dilla Afriansyah, Lingga Gita Dwikasari — Mon, 29 Jun 2026 19:33:41 +0100

Efficient production and distribution planning is essential for improving profitability and operational performance in coffee supply chains. This study develops a linear programming model to optimize coffee production and distribution decisions under multiple demand scenarios. The model considers three coffee products, namely Robusta, Arabica, and Blend coffee, distributed to four regional markets. The objective is to maximize total net profit while satisfying production capacity, demand, distribution capacity, service-level, and minimum production constraints. Three demand scenarios—low, medium, and high demand—were evaluated to examine the impact of varying market conditions on optimal production and distribution strategies. The results indicate that the optimal profit increased from Rp 56.585 million under the low-demand scenario to Rp 80.375 million under the medium-demand scenario and Rp 94.350 million under the high-demand scenario. The optimization model consistently prioritized Arabica and Blend products because of their higher profitability, while Robusta was utilized primarily to satisfy capacity and demand requirements under higher-demand conditions. Shadow price analysis identified Arabica production capacity and regional distribution capacities as the most critical resources affecting profitability. In addition, reduced cost analysis revealed distribution routes that were not economically competitive under current operating conditions. The findings demonstrate that the proposed linear programming framework provides an effective decision-support tool for optimizing coffee production and distribution planning. The integration of scenario analysis and dual analysis offers valuable managerial insights for improving resource allocation, operational efficiency, and profitability in coffee-based food enterprises.

Mathematical Resilience dalam Perspektif Filsafat Pendidikan Matematika

Nena Meilan, Varialya Kayla Azzahra, Anggun Badu Kusuma — Mon, 29 Jun 2026 23:52:26 +0100

Mathematical resilience is a student’s ability to persevere, remain confident, and maintain a positive attitude when facing difficulties in learning mathematics. Low mathematical resilience can lead to math anxiety, low motivation to learn, and a decline in academic achievement. Although it has been extensively studied from psychological and pedagogical perspectives, research examining mathematical resilience from the perspective of the philosophy of mathematics education remains limited. This article aims to analyze the concept, influencing factors, and implications of mathematical resilience in mathematics learning. The study employs a literature review method by analyzing articles published between 2019 and 2026 from the Google Scholar and ERIC databases. The findings indicate that mathematical resilience encompasses the dimensions of value, struggle, growth, support, and culture, which are influenced by cognitive, psychological, and social factors. The absolutist paradigm tends to hinder the development of resilience, whereas constructivism and fallibilism support it by accepting mistakes as part of the learning process. These findings underscore the importance of a psychologically safe learning environment, as well as the implementation of productive struggle and open-ended problems to enhance students’ mathematical resilience.

Penerapan Persamaan Diferensial Model Eksponensial dan Logistik dalam Mengestimasi Jumlah Penduduk Di Nusa Tenggara Barat

Rida Alkausar Hardi, Ifan Hasnan Dani, Rio Satriyantara, Hady Rasikhun — Tue, 30 Jun 2026 07:18:48 +0100

Rapid population growth can lead to social and economic problems if it is not properly controlled. This study
aims to model the population of West Nusa Tenggara using differential equation models, namely the
exponential and logistic models. Population data were obtained from Statistics Indonesia for the period from
1994 until 2024. The exponential model was applied by calculating the growth rate based on the actual data,
while the suitability of the logistic model was also examined. The results indicate that the logistic model is
not valid because it produces a negative carrying capacity, which contradicts the fundamental assumptions
of the model. Meanwhile, the second exponential model, with a population growth rate of 1.5% per year,
provides the best accuracy based on a Mean Absolute Percentage Error (MAPE) value of 0.78%. Therefore,
the exponential model is considered the most appropriate approach for predicting the population of West Nusa
Tenggara until 2034.

Pengembangan Laboratorium Virtual Matematika pada Materi Bangun Datar Kelas VII MTsS NW Sepit

Wais Al Qorni, Sudi Prayitno, Ratna Yulis Tyaningsih — Tue, 30 Jun 2026 07:43:39 +0100

Rapid technological advancements have brought about changes in the world of education, including their
application in mathematics instruction. This study aims to develop a virtual mathematics laboratory focused
on plane geometry and to determine its feasibility and practicality. The research design employed is Research
and Development (R&D) using the ADDIE model, which includes the stages of analysis, design, development,
implementation, and evaluation. The research subjects consisted of 18 seventh-grade students at MTsS NW
Sepit. Data collection techniques included interviews, expert validation regarding the media and content, and
a student practicality questionnaire. The results showed that the feasibility rating from the media expert was
87.33% and from the content expert was 84.28%, with an average of 85.51% in the “highly feasible” category.
The students’ practicality level reached 88.75%, falling into the “very good” category. Thus, the developed
virtual laboratory is deemed feasible and practical and has the potential to enhance students’ conceptual
understanding interactively. Furthermore, the development of this virtual laboratory has a positive impact
on the learning process, namely by increasing students’ engagement, interest, and motivation in studying
plane geometry through more engaging and interactive technology-based learning.

Optimalisasi Produksi Bakso dengan Menggunakan Pendekatan Integer Linear Programming Pada Rumah Makan Jawa Lumintu

David Kapele, James Mangobi — Tue, 30 Jun 2026 07:54:09 +0100

Micro, small, and medium enterprises (MSMEs) in the culinary sector often face production planning problems due to limited raw materials and production decisions based on estimation. This study aims to determine the optimal production quantities of several meatball variants at Rumah Makan Jawa Lumintu using Integer Linear Programming (ILP) assisted by POM-QM for Windows. This research is an applied quantitative study in Operations Research. Data were collected through observation and interviews regarding raw material composition, production output, inventory availability, and the production system. A mathematical model was developed to maximize total meatball production by considering raw material constraints, minimum production requirements, and integer restrictions. The results showed that the optimal production combination in a four-day production cycle consists of 5942 regular meatballs, 150 tenes meatballs, 200 tendon meatballs, and 50 super meatballs, yielding a maximum production of 6342 meatballs. Compared with the actual production of 5320 meatballs, the optimization model increased output by 1022 meatballs or 19,21%. Therefore, ILP assisted by POM-QM for Windows can be used as an effective tool for more optimal, efficient, measurable, and data-driven production planning.

Systematic Literature Review Model Matematika Kompartemen pada Penyakit dan Kontagion Sosial

Gilang Primajati, M. Gunawan Supiarmo — Tue, 30 Jun 2026 00:00:00 +0100

Epidemic-type mathematical compartmental models are no longer limited to biological infectious diseases; they are increasingly adapted to behavioral and social contagion phenomena. This study aimed to systematically review the use of SIR, SEIR, SEIRS, and modified compartmental models in infectious disease transmission and social phenomena. A systematic literature review was conducted by screening 24 full-text articles collected from journal databases and publisher repositories from 2020 to 2026. Eighteen primary modelling studies were included in the main synthesis, while six review or guideline articles were used as theoretical and methodological support. Data were extracted on model type, domain, compartments, data source, mathematical analysis, simulation method, software, and major findings. The reviewed infectious disease studies addressed tuberculosis, malaria, COVID-19, and typhus, whereas social-domain studies covered online game addiction, social media addiction (TikTok), online gambling, gambling crime, and impulsive buying. SEIR was the most frequent structure, followed by SEIRS and SIR. Most studies calculated equilibrium points and the basic reproduction number; fewer studies reported sensitivity analysis, parameter calibration, uncertainty analysis, or empirical validation. The findings indicate that compartmental models are flexible analytical tools across biological and social systems, but future studies need stronger reporting transparency, parameter justification, validation, and reproducible simulation procedures.

Perkembangan Media Pembelajaran Geometri Berbasis Augmented Reality dalam Pembelajaran Matematika SMP

Nilza Humaira Salsabila — Tue, 30 Jun 2026 00:00:00 +0100

Tujuan penelitian ini adalah untuk menghasilkan produk berupa media pembelajaran augmented reality menggunakan platform assemblr pada materi geometri untuk siswa SMP. Target khusus yang ingin dicapai pada penelitian ini adalah adanya media pembelajaran augmented reality yang layak dan peningkatan hasil belajar geometri siswa SMP. Dimana media dikatakan layak jika memenuhi kriteria valid, praktis, dan efektif. Metode yang akan digunakan dalam pencapaian tujuan penelitian ini adalah design research yang dikembangkan oleh Plomp. Model pengembangan ini memiliki 3 fase yang perlu dilakukan oleh peneliti, yaitu tahap penelitian awal (preliminary research), tahap pengembangan (prototyping phase), dan tahap asesmen (assessment phase). Tahap penelitian awal terdiri atas kegiatan identifikasi masalah dan analisis kebutuhan, meninjau literatur, dan mengembangkan kerangka awal untuk pengembangan produk. Kemudian pada tahap pengembangan terdiri atas kegiatan mengembangkan prototype produk untuk diuji coba sekaligus melakukan evaluasi formatif terhadap produk. Terakhir, pada tahap asesmen yakni melakukan evaluasi sumatif terhadap produk yang dikembangkan.

Perspektif Logikalisme dan Formalisme terhadap Pembelajaran Matematika Mindful, Meaningful, dan Joyful

Indra Tri Buana, Burhannurfirdaus Abdulah, Anggun Badu Kusuma — Tue, 30 Jun 2026 08:11:26 +0100

21st-century mathematics education is not only oriented towards mastering concepts and procedures, but also
towards developing mindful, meaningful, and joyful (MMM) learning experiences. In this context, the
philosophy of mathematics serves as a theoretical foundation that can provide direction for the development
of more effective learning. This study aims to analyze the contribution of logicalism and formalism
perspectives to MMM-based mathematics learning. The study used the Systematic Literature Review (SLR)
method by reviewing various relevant literature from scientific journals, books, and other academic sources.
Data were analyzed using content analysis techniques through the processes of identification, classification,
interpretation, and synthesis of findings. The results of the study indicate that logicalism contributes to
developing deductive reasoning skills, critical thinking, mathematical argumentation, and conceptual
understanding that support the realization of meaningful learning. Meanwhile, formalism plays a role in
building procedural skills, accuracy, consistency, and awareness of thought processes that align with the
principles of mindful learning. The integration of these two perspectives can create more reflective,
systematic, and joyful mathematics learning. Thus, logicalism and formalism can be seen as complementary
philosophical foundations in supporting the development of modern mathematics education.

Pengaruh Model Pembelajaran Kooperatif Tipe Team Assisted Individualization Terhadap Kemampuan Pemecahan Masalah Matematis Siswa

Nurjanna Amini, Zulfah, Astuti, Molli Wahyuni, Zulhendri — Tue, 30 Jun 2026 08:35:22 +0100

The mathematical problem-solving ability of grade VIII students at SMPN Bangkinang is still low. This is evident from the average daily test scores, which remain below the Minimum Completeness Criteria of 70. This study aims to analyze the effect of using the Team Assisted Individualization (TAI) learning model on the mathematical problem-solving ability of grade VIII students at SMPN 1 Bangkinang. This research employed a quasi-experimental design with a pretest-posttest control group design. The sample consisted of two classes: an experimental class that implemented the TAI learning model and a control class that used conventional learning. The research instruments included a mathematical problem-solving test and observation sheets. The results of this study indicate that there is a difference in mathematical problem-solving ability between students who used the cooperative learning model type Team Assisted Individualization (TAI) and students who used conventional learning. This was proven by the Mann-Whitney U test on posttest data, in which the experimental class had an average score of 33.63, while the control class only scored 15.38. The significance value of 0.020 < 0.05 indicates that the difference is statistically significant. The effect of the cooperative learning model type TAI on problem-solving ability is categorized as very high. This is evidenced by the effect size calculation result of 1.3020, which, according to the effect size interpretation criteria, falls into the very high category. Thus, the implementation of the TAI model has a strong effect on improving students’ ability to understand problems, design solution strategies, and evaluate answers systematically.

Analisis Faktor Risiko Keterlambatan Kelulusan Mahasiswa Dengan Regresi Logistik Biner

Indah Simamora, Fransiska Atrik Halim, Carolin Dwija Novandini — Tue, 30 Jun 2026 10:59:10 +0100

Delayed graduation is one of the academic issues that can affect the effectiveness of higher education management and the quality of graduates. This problem is also experienced by students of the Mathematics Education Study Program at Universitas Nusa Cendana, where many students have not completed their studies on time. This study aims to identify the factors influencing the risk of delayed graduation among students of the Mathematics Education Study Program at Universitas Nusa Cendana using a binary logistic regression model, considering both academic and non-academic factors. It also aims to determine the most dominant factor contributing to delayed graduation and to evaluate the model’s ability to classify and predict students’ graduation status. The dependent variable is graduation status, categorized as delayed graduation and on-time graduation. The independent variables include academic and non-academic factors. This study uses primary data collected through questionnaires distributed to students of the Mathematics Education Study Program at Universitas Nusa Cendana. The sample consisted of 96 students from the 2021/2022 cohort. The results indicate that gender, the number of repeated courses, and learning motivation significantly influence delayed graduation. The binary logistic regression model was able to predict students’ graduation status with an accuracy rate of 88.5%.

Interaksi Kecemasan Matematika dan Self-Efficacy Terhadap Kemampuan Berpikir Kreatif Siswa Sekolah Menengah Pertama

Ragil Ashari, Imam Kusmaryono — Tue, 30 Jun 2026 00:00:00 +0100

The purpose of this study is to investigate the influence of math anxiety on creative thinking ability, the influence of self-efficacy on creative thinking ability, and the combined influence of math anxiety and self-efficacy on creative thinking ability in RADEC learning, as well as to investigate the interaction between math anxiety and self-efficacy in their influence on creative thinking ability among 8th-grade students studying linear equations. This study is a quantitative study using an ex-post facto approach. The sample in this study consists of 32 eighth-grade students from Class 8D at SMP Negeri 30 Semarang, selected using cluster random sampling. The instruments used were a mathematics anxiety questionnaire, a self-efficacy questionnaire, and a test of students’ creative thinking ability using linear equation material. Initial data analysis techniques included normality and linearity tests. Hypothesis testing utilized multiple linear regression and two-way ANOVA. The results of the study indicate that: (1) mathematics anxiety and self-efficacy have a simultaneous (joint) effect on students’ creative thinking ability; (2) there is an interaction between mathematics anxiety and self-efficacy in their influence on students’ creative thinking ability;

Analisis Filosofis terhadap Persepsi “Matematika Itu Sulit” dan Implikasinya terhadap Motivasi Belajar Siswa

Nur Elda Azaria, Reynata Tri Putri Apriliana, Anggun Badu Kusuma — Tue, 30 Jun 2026 14:43:49 +0100

This article examines the philosophical belief that "mathematics is difficult" and how it affects students' motivation to learn. By looking at numerous scientific sources about students' perspectives, learning motivation, and mathematical philosophy, the study uses a literature review methodology. The results show that both internal and external influences affect the impression of mathematics as a challenging subject. Low self-esteem, anxiety about maths, a lack of basic abilities, a fear of failing, and bad learning experiences are examples of internal issues. Lack of parental support, academic pressure, boring instructional strategies, and the negative social stigma associated with mathematics are examples of external causes. Four philosophical schools of thought—formalism, constructivism, logicism, and intuitionism—can be used to understand this perception. Negative judgements also dramatically lower kids' drive to learn, which results in passive behaviour, low self-esteem, and poor academic achievement. Positive views, on the other hand, can improve motivation, critical thinking, and problem-solving skills. Therefore, improving students' views and motivation requires developing relevant, participatory, and student-centered mathematics instruction.

Penerapan Metode Kuadratur Gauss-Legendre dalam Estimasi Akumulasi Curah Hujan Harian DAS Bengawan Solo

Linda Agustin WWidyawati Lestari, Ari Wibowo — Tue, 30 Jun 2026 16:26:18 +0100

This study applies the Gauss-Legendre Quadrature method with order variations n = 2 to n = 6 to calculate discrete daily rainfall accumulation at the Jurug 2 Station of BBWS Bengawan Solo during the period of March 17 - April 15, 2026, which is directly relevant to the major flooding event in Solo Raya on April 14 - 15, 2026. The method adaptation was carried out through interval transformation using the formula xᵢ = 15tᵢ + 16 and linear interpolation to obtain function values at non-integer evaluation points, with all computations implemented using Microsoft Excel. The actual rainfall accumulation value of 353.5 mm was used as the error reference. The calculation results show that the estimates for each order are 293.222 mm (n = 2; error 17.05%), 78.114 mm (n = 3; error 77.90%), 289.299 mm (n = 4; error 18.16%), 252.338 mm (n = 5; error 28.62%), and 414.449 mm (n = 6; error 17.24%). The error convergence pattern is non-monotonic and deviates from theoretical expectations due to the non-smooth characteristics of daily rainfall data with 13 zero-value days. Order n = 2 produces the smallest error, although this advantage is situational. The study concludes that simultaneous cross-order validation is more reliable than applying a single order to support flood early warning systems.

Vape-Demic: Pengaruh Lingkungan Pergaulan terhadap Penularan Penggunaan Vape (Rokok Elektrik) menggunakan Model SEIR

Tue, 30 Jun 2026 16:57:47 +0100

The use of vape among teenagers and young adults has increased in recent years and is influenced by social environments. This study aimed to analyze the influence of social interaction on the spread of vape use using the Susceptible, Exposed, Infected, Recovered (SEIR) model. This research used a quantitative approach with an epidemiological mathematical modeling method. Data were collected through an online survey using Google Forms involving young people in Tondano from March 12, 2026 to May 10, 2026. The study sample consisted of 54 respondents selected using purposive sampling techniques. Data analysis was conducted by calculating the SEIR model parameters based on survey results, followed by simulation using RStudio to observe the dynamics of population changes in each group. The results showed that social interaction had a significant influence on the spread of vape use. The β parameter value of 0.444 indicated the influence of social interaction on susceptible individuals. The α parameter value of 0.923 showed that individuals who became interested in vape had a high probability of becoming active users, while the γ parameter value of 0.541 indicated that some active users were able to stop using vape. Simulation results demonstrated that the number of active vape users increased over time due to social environmental influences. This study shows that the SEIR model can be applied to analyze the spread of social behavior, particularly vape use behavior.

Pengembangan Media Pop-Up Book Materi Kesebangunan Untuk Meningkatkan Pemahaman Konsep Matematis Siswa

Umi Asmiati, Imam Kusmaryono — Wed, 01 Jul 2026 02:35:56 +0100

Kemampuan pemahaman konsep matematis siswa, khususnya pada materi geometri, masih tergolong rendah karena pembelajaran yang berlangsung cenderung berpusat pada guru dan belum didukung media pembelajaran yang menarik. Materi kesebangunan menjadi salah satu topik yang cukup sulit dipahami siswa karena memerlukan kemampuan visualisasi dan penalaran perbandingan. Penelitian ini bertujuan untuk mengembangkan media pembelajaran pop-up book pada materi kesebangunan guna meningkatkan pemahaman konsep matematis siswa. Penelitian menggunakan metode Research and Development (R&D) dengan model pengembangan 4-D yang dimodifikasi menjadi tiga tahap, yaitu define, design, dan develop. Subjek penelitian terdiri atas satu validator ahli materi, satu validator ahli media, dan 26 siswa kelas VII MTs Al-Hamidiyyah Kecamatan Mranggen. Teknik pengumpulan data dilakukan melalui lembar validasi, angket respon siswa, dan tes pemahaman konsep matematis. Hasil validasi menunjukkan bahwa rata-rata indeks validasi ahli materi sebesar 0,795 dan ahli media sebesar 0,8 sehingga media dinyatakan valid. Respon siswa terhadap media memperoleh persentase sebesar 78,15% dengan kategori praktis. Selain itu, hasil uji N-gain sebesar 0,5055 berada pada kategori sedang. Hasil tersebut menunjukkan bahwa media pop-up book yang dikembangkan layak dan efektif digunakan untuk membantu meningkatkan pemahaman konsep matematis siswa pada materi kesebangunan.

Desain E-LKPD Berbasis Concept Image Siswa pada Materi Barisan dan Deret

Tue, 30 Jun 2026 00:00:00 +0100

This study aims to develop a concept image-based E-LKPD on sequences and series using the ADDIE model.
This development research was carried out up to the Development stage, which includes Analysis, Design,
and Development. In the analysis stage, learning needs were identified through concept image tests,
interviews, and documentation studies. The results of the analysis showed that students still had difficulty
in understanding the concepts of sequences and series in depth, differentiating the concepts of sequences and
series, and connecting various mathematical representations. Based on these needs, an E-LKPD was designed
that included problem-oriented activities, pattern exploration, concept construction, concept reflection, and
contextual application. In the development stage, the E-LKPD prototype was compiled and validated by
material experts and media experts to assess the feasibility of content, presentation, language, and
appearance. The validation results showed that the developed E-LKPD met the valid criteria and was suitable
for use as a supporting teaching material for mathematics learning. The concept image-based E-LKPD is
expected to help students build a better conceptual understanding of sequences and series through the
integration of visual, verbal, numeric, and symbolic representations.