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Tabita Wahyu Triutami
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Griya Journal of Mathematics Education and Application
Published by Universitas Mataram
ISSN : 27761258     EISSN : 2776124X     DOI : https://doi.org/10.29303/griya.v1i2
Core Subject : Education,
Education Mathematics
Griya Journal of Mathematics Education and Application adalah Jurnal Matematika dan Pendidikan Matematika yang dikelola oleh Program Studi S1 Pendidikan Matematika Universitas Mataram. Fokus dan ruang lingkup dari jurnal ini adalah artikel ilmiah baik berupa hasil penelitian, review artikel maupun kajian pustaka khusus bidang Matematika dan Pendidikan Matematika.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 453 Documents
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Pengembangan E-modul Berbasis Model Pembelajaran Kooperatif Learning : Tipe Teams Games Tournament (TGT) Pada Materi Fungsi Kuadrat Sahrain, Maryam; Pomalato, Sarson W.Dj; Oroh, Franky Alfrits
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.969

Abstract

The purpose of this study is to produce a quality interactive learning E-module with a cooperative learning model of the Teams Games Tournament (TGT) type on the quadratic function material in class X of SMA Negeri 7 North Gorontalo. This study is a Research and Development study with an ADDIE approach model consisting of 5 stages, namely, Analysis, Design, Development, Implementation and Evaluation. The data in this study were collected using several instruments, namely, media and material expert validation questionnaires to assess the level of validity, as well as student response questionnaires to measure the practicality of the developed E-Module. The results of the study were based on the assessment of the quality of media and material, in accordance with the validation carried out by media experts and material experts separately, namely 71.52% and 60.51%, with valid criteria. And the results of student responses obtained a score of 80.06% with very practical criteria. This indicates that the E-Module based on the cooperative learning model of the teams games tournament (TGT) type meets the criteria of feasibility and practicality for application in learning.
Analisis Probabilistik Untuk Perediksi Cuaca Di Kota Medan Dan Kabupaten Deli Serdang (Menggunakan Metode Rantai Markov) Sianturi, Anju Hamonangan; Br Panjaitan, Esrani Julita; Br Kaban, Friska Adilina; Johana Panggabean, Indah Fabriane; Johana, Nuryusridah Liani; Bangun, Samuel Juliusta; Panggabean, Suvriadi
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.970

Abstract

Cuaca merupakan fenomena alam yang sulit diprediksi karena dipengaruhi oleh berbagai variabel yang saling berkaitan. Peramalan cuaca memiliki peranan penting dalam pengambilan keputusan dan perencanaan aktivitas masyarakat sehari hari. Data meteorologi dari BMKG dapat dimanfaatkan untuk menganalisis dan memprediksi kondisi cuaca di masa mendatang. Salah satu metode yang dapat digunakan dalam peramalan cuaca adalah analisis Rantai Markov. Rantai Markov merupakan proses stokastik yang memodelkan sistem dinamis, di mana keadaan di masa depan hanya bergantung pada kondisi saat ini dan dapat dinyatakan dengan persamaan P{Xn+1 = j|X0 = i0 … …, Xn-1 = in-1,Xn = i} = P{Xn+1 = j| Xn == i} . Metode ini menggunakan matriks peluang transisi untuk memperkirakan perubahan keadaan secara metematis. Penelitian ini bertujuan menerapkan model Rantai markov untuk memprediksi cuaca harian di Kabupaten Deli Serdang dan kota medan berdasarkan data BMKG periode 1-30 September 2025. Variabel yang digunakan meliputi kondisi cerah, berawan, hujan ringan, dan hujan. Hasil menunjukkan bahwa di Deli Serdang, peluang hujan ringan mencapai 73% jika sebelumnya cerah, 65,6% jika berawan, dan 99,9% jika sebelumnya hujan ringan. Di Kota Medan, peluang berawan mencapai 77,7% jika sebelumnya cerah dan 99,9% jika sebelumnya berawan. Hasil ini menunjukkan bahwa model Rantai Markov efektif dalam merepresentasikan pola perubahan cuaca secara probabilistik dan akurat untuk peramalan jangka pendek. Kata Kunci: 1; Rantai Markov, 2; Peramalan Cuaca, 3; Probabilitas Transisi, 4; BMKG, 5; Deli Serdang, Kota Medan
Development of E-Lkpd Mathematics based on the Realistic Mathematics Education (RME) Model to Improve Mathematical Representation Abality of student Islamic Elementary School Nina Widyawati; Wulan Andini; Ahmad Arifuddin
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.974

Abstract

This research is motivated by the low mathematical representation ability of elementary school students, particularly in the data presentation material. Students are still experiencing difficulty in communicating mathematical ideas visually, symbolically, and verbally. This condition is exacerbated by a learning process that tends to be conventional, a lack of media innovation, and the unavailability of technology-based teaching materials that support representation skills. Therefore, this research aims to develop mathematics E-LKPD based on the Realistic Mathematics Education (RME) model to improve students' representation abilities. This research was conducted at MI Al-Ishlah Bobos, involving 36 fifth-grade students as respondents. The method used in this research is Research and Development (R&D), referring to the ADDIE development model, which consists of five main stages: 1) Analysis, 2) Design, 3) Development, 4) Implementation, and 5) Evaluation. Based on the validation results from the expert team, the following media feasibility levels were obtained: media experts 96%, language experts 93%, and content experts 100%, all of which fall into the very valid category. After making improvements to the media and content based on validator feedback, the researcher proceeded to the implementation stage with 36 fifth-grade students. The results of this implementation showed that the media received a score of 70%, which falls into the "good" category.
Eksplorasi Kesalahan Siswa pada Materi Aljabar di SMP: Systematic Literature Review Vivied Eka Pratiwi; Sampoerno, Pinta Deniyanti; Aziz, Tian Abdul
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.975

Abstract

An educator must conduct error analysis to determine the extent to which students understand the lesson. Furthermore, student error analysis can also be used as evaluation material and as a consideration in subsequent learning. The purpose of this study was to review literature related to error analysis in junior high school algebra material. This research is a Systematic Literature Review. Data collection was conducted by reviewing articles that have the research topic of error analysis theory in junior high school algebra problems. Data collection came from journals indexed by Sinta for the past 5 years. The obtained articles were 16 articles that met the criteria. Based on the search results, it was found that the analysis theory frequently used to conduct error analysis in algebra material is the costalan theory with three indicators: conceptual errors, procedural errors, and technical errors. The types of errors that appear range from misinterpreting algebraic elements to misapplying correct concepts. Therefore, a possible solution is to create learning activities that emphasize active student involvement to help students understand the concepts of algebra
Integrasi Keuangan Modern dan Kecerdasan Buatan untuk Analisis Investasi dan Risiko Saham PT United Tractors tbk (UNTR) Tampubolon, Bungaria; Daulay, Nurfitri Humayro; Tarigan, Febry Vista Kristen
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.976

Abstract

Penelitian ini mengintegrasikan analisis keuangan modern dengan kecerdasan buatan untuk mengevaluasi profil investasi dan risiko saham PT United Tractors Tbk (UNTR) selama periode Januari 2015 hingga Desember 2024. Dengan menggunakan pendekatan kuantitatif terhadap 116 observasi bulanan, penelitian ini mengombinasikan algoritma machine learning (Logistic Regression dan XGBoost) dengan pemodelan ekonometrika (Vector Autoregression) untuk memprediksi arah return saham dan menganalisis hubungan dinamis antar variabel makroekonomi dan fundamental. Hasil penelitian menunjukkan bahwa kedua model machine learning mencapai akurasi sekitar 53%, dengan Debt to Equity Ratio (DER) sebagai prediktor paling berpengaruh dengan kontribusi 21,4%, yang mengindikasikan dominasi faktor fundamental dibandingkan variabel makroekonomi. Analisis VAR menunjukkan bahwa lebih dari 98% volatilitas UNTR dijelaskan oleh momentum internalnya sendiri, bukan faktor eksternal seperti harga batubara atau nilai tukar. Penilaian risiko melalui Value at Risk (VaR) pada tingkat kepercayaan 95% menunjukkan potensi kerugian maksimum sebesar 15,7%, sementara Maximum Drawdown (MDD) sebesar -59,64% mengindikasikan volatilitas historis yang substansial. Kerangka kerja hibrida ini berhasil memberikan wawasan komprehensif untuk pengambilan keputusan investasi dengan mengintegrasikan pemodelan prediktif dan alat pengukuran risiko formal.
Efektivitas Penggunaan E-LKPD Interaktif Terhadap Hasil Belajar Matematika Siswa kelas VIII SMPN 5 Mataram Tahun Ajaran 2025/2026 Kertiyani, Ida Ayu Made; Azmi, Syahrul; Lu'luilmaknun, Ulfa
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.977

Abstract

Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan E-LKPD interaktif terhadap hasil belajar matematika siswa kelas VIII SMPN 5 Mataram tahun ajaran 2025/2026. Penelitian ini merupakan penelitian eksperimen semu dengan populasi seluruh siswa kelas VIII SMPN 5 Mataram. Sampel penelitian terdiri dari kelas VIII G sebagai kelas eksperimen yang mendapatkan pembelajaran menggunakan E-LKPD interaktif, dan kelas VIII F sebagai kelas kontrol yang menggunakan LKPD cetak. Teknik pengumpulan data meliputi observasi terhadap guru dan siswa, serta pemberian pretest dan posttest. Data yang diperoleh dianalisis menggunakan uji-t dan N-Gain. Hasil analisis menunjukkan bahwa rata-rata nilai kelas eksperimen meningkat dari 30,52 (pretest) menjadi 80,75 (posttest), sedangkan kelas kontrol meningkat dari 28,14 (pretest) menjadi 67,95 (posttest). Uji-t menunjukkan bahwa > = 12,731 > 1,989 pada taraf signifikansi 0,05, menandakan adanya perbedaan yang signifikan antara kedua kelas. Selain itu, hasil perhitungan N-Gain sebesar 0,77 termasuk dalam kategori tinggi. Dengan demikian, dapat disimpulkan bahwa penggunaan E-LKPD interaktif lebih efektif dibandingkan LKPD cetak dalam meningkatkan hasil belajar matematika siswa.
Eksplorasi Etnomatematika terhadap Pola dan Struktur Matematis Batik Khas Wonosobo Fadila, Meyla Tri; Tadqiroh, Alfiatun; Sabrina, Dela Citra; Kusuma, Anggun Badu
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.978

Abstract

Batik khas Wonosobo merupakan salah satu warisan budaya lokal yang kaya akan pola visual serta banyak memuat unsur-unsur geometris dalam setiap motifnya. Namun demikian, motif batik Wonosobo masih belum banyak dimanfaatkan sebagai sumber belajar dalam pembelajaran matematika di sekolah. Penelitian ini bertujuan untuk mengeksplorasi konsep-konsep matematika dan nilai-nilai budaya yang terkandung dalam ragam motif batik khas Wonosobo melalui pendekatan etnomatematika. Studi ini menggunakan metode kualitatif dengan pendekatan etnografi. Partisipan dalam penelitian ini adalah para pengrajin batik di daerah Talunombo dan sekitarnya, sedangkan objek analisisnya berupa motif-motif batik Wonosobo yang diproduksi dalam lingkungan budaya setempat. Data dikumpulkan melalui wawancara, observasi lapangan, dan dokumentasi. Analisis data dilakukan melalui interpretasi mendalam terhadap fenomena yang ditemukan serta pemaknaan budaya dari para informan, yang kemudian dipadukan dengan analisis peneliti melalui diskusi kelompok terfokus (FGD). Temuan penelitian menunjukkan bahwa motif batik Wonosobo memuat konsep-konsep matematika seperti simetri, transformasi geometri, pola pengulangan, serta bangun datar. Selain itu, motif tersebut mencerminkan nilai-nilai budaya lokal seperti kreativitas, pelestarian tradisi, dan identitas daerah. Hasil penelitian ini berpotensi dimanfaatkan dalam pengembangan pembelajaran matematika berbasis kearifan lokal khususnya di Wonosobo.
Mathematical Modeling of Bread Baking: A Bibliometric Review of PDE-Based Multiphysics Approaches Afriansyah, Dilla; Gita Dwikasari, Lingga
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.980

Abstract

This study examines how partial differential equations serve as the mathematical foundation for modeling the coupled heat and mass transfer processes occurring during bread baking. Through a systematic bibliometric approach, data from major scientific databases were analyzed using mapping techniques to identify dominant themes, research clusters, and developmental trends in mathematical modeling for bread baking. The findings indicate that heat transfer, moisture migration, crust formation, and dough thermomechanics constitute the core of this field, with diffusion and convection–diffusion equations forming the principal modeling framework. Network, overlay, and density visualizations reveal a growing adoption of advanced numerical schemes and multiphysics simulations to predict temperature and moisture distributions within the bread matrix. This study underscores the essential role of mathematics in enhancing process understanding and modeling accuracy, and highlights future research opportunities that integrate computational approaches into food engineering.
Pengaruh Model Problem Based Learning Berbantuan E-LKPD Interaktif Terhadap Kemampuan Pemecahan Masalah Matematika Siswa Kelas VIII SMP Negeri 11 Mataram Tahun Ajaran 2025/2026 Kayanti, Kusamantha Dwi; Turmuzi , Muhammad; Kurniati, Nani
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.981

Abstract

The background of this study is the low problem-solving ability of students due to the use of ineffective learning models and the minimal use of learning media. This study aims to determine the effect of the E-LKPD Interactive-assisted Problem-Based Learning (PBL) model on the mathematical problem-solving ability of eighth-grade students at SMP Negeri 11 Mataram in the 2025/2026 academic year. The type of research used is a quasi-experimental design with a quantitative approach. The population in this study consisted of 96 eighth-grade students with a sample of 48 students selected using cluster random sampling. Data collection techniques were carried out through observation and tests. Data were obtained through posttests and analyzed using the t-test. The results of the analysis showed that the t-count = 2.806 was greater than the t-table = 2.013, so was accepted and was rejected. Thus, there was a significant difference in mathematical problem-solving skill between the experimental class and the control class. The effect size value of indicates that the effect is in the strong category.
Eksplorasi Etnomatematika pada Ragam Motif Batik Gumelem Banjarnegara Aprilina, Amanda; Faza, Aruni; Listyani, Erlin; Kusuma, Anggun Badu
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.983

Abstract

This study aims to explore the mathematical aspects of various Gumelem batik motifs typical of Banjarnegara Regency. The background of this study is the lack of mathematical studies that focus on this batik. The method used is descriptive qualitative with an ethnographic approach through direct observation, documentation, and in-depth interviews with batik artisans. Data analysis was carried out by identifying mathematical elements such as plane geometry, similarity, congruence, geometric transformations, algebraic principles, and number sequence patterns. The results show that Gumelem batik motifs contain various mathematical components. The Watu Pecah motif contains the concepts of triangles, rhombuses, and congruence. The Gedong Kosongan Coletan motif depicts similarity and the Two-Variable Linear Equation System (SPLDV). The Kawung Plangkah Merak motif includes dilation and rotation, while the Babon Angrem motif applies reflection and the Dieng Temple motif shows translation. In addition, the Udan Liris motif depicts the concept of number sequences. This study confirms the great potential of Gumelem batik as a local culture-based mathematics learning medium (ethnomathematics) that is relevant to local wisdom.

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