JURNAL MathEdu (Mathematic Education Journal)

ETNOMATEMATIKA TENUN TRADISIONAL BUNA TIMOR TENGAH UTARA DAN IMPLIKASI PEDAGOGIS

Selestina Nahak — 2026-03-18

Abstract

This study aims to reveal the mathematical concepts embedded in the weaving activities of Buna woven-cloth artisans in Letmafo Village, Central Insana District, North Central Timor Regency. This research employed a qualitative ethnographic approach. Data were collected through observation, interviews, and documentation with three main informants: a traditional leader and two experienced weavers. Data analysis used domain, taxonomy, componential, and cultural-theme stages. The findings show that weaving activities contain mathematical elements such as counting (the number of threads and repeated patterns), measuring (length and width of the cloth using non-standard units such as hand-span), and designing (forming geometric patterns such as squares, triangles, rhombuses, and lines of symmetry). Ethnomathematics in the Buna motif reflects an integration between local culture and mathematical concepts of geometry and number patterns that can be used as contextual learning resources.

Keyword: Ethnomathematics, Buna woven cloth, Letmafo culture, mathematics learning

PERAN ETNOMATEMATIKA DALAM PEMBELAJARAN MATEMATIKA

Rajiun Siregar — 2026-03-18

Abstract This study aims to determine the effectiveness of ethnomathematics-based learning in mathematics learning. This research is a library research with a qualitative approach. The method of collecting data is by means of document studies and analyzed by technical descriptive analysis. Library research is research whose data comes from books, dictionaries, documents, magazines, journals and so on. (Harahap, 2014) While the analytical technique used is descriptive analysis technique by looking at research data that has been done by previous people related to ethnomathematical research. This is evidenced by research studies that have been carried out by researchers who have done previously which will be mentioned in the discussion of this research. Therefore, ethnomathematics can be used by teachers in conducting effective and fun learning, besides that ethnomathematics can improve students' mathematical abilities such as the results of research that will be discussed in this discussion and can increase the love of students to understand their own culture.

IMPLEMENTASI KURIKULUM MERDEKA PADA PEMBELAJARAN MATEMATIKA DI UPTD SMP NEGERI 8 GUNUNGSITOLI

Sari Santi Siapudan Lase — 2026-03-18

This research is based on a preliminary study conducted through initial observations at UPTD SMP Negeri 8 Gunungsitoli, which reavealed that teachers are still in the adjustment stage to the independent curriculum, leading to suboptimal implementation. Low student motivation, inadequate mathematics learning facilities and infrastructure, and limited resources encouranged the researcher to investigate the extent of the independent curriculum implementation, learning, and assessment at the school. This study employs a qualitative research method with data colleted through observation, interviews, and documentation. The instruments used included interviews with teacher, student, and several school administration. Data analysis consisted of data reduction, data presentation, and conclusion drawing using qualitative deskriptive analysis techniques. The findings of this research indicate that teachers have prepared learning plans based on the independent curriculum. although the implementation has not been fully optimal. Teachers have integrated the main components of the independent curriculum into the learning process, but some still encounter abstracles due to a lack of facilities and resources. Overall , the independent curriculum has been implemented and has shown positive results in learning, thought improvements are still needed to achieve maximum outcomes.

PENGEMBANGAN E-MODUL BERBASIS PENDEKATAN HEURISTIK UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA KELAS VIII-2 SMP NEGERI 1 MARANCAR

Nanda Sari — 2026-03-18

Penelitian ini bertujuan untuk mengembangkan E-Modul berbasis pendekatan Heuristik untuk meningkatkan kemampuan pemecahan masalah matematis siswa di SMP Negeri 1 Marancar dan mengetahui aspek kevalidan, kepraktisan dan keefektivan media pembelajaran menggunakan model ADDIE (Analysisis, Design, Development, Implementation And Evaluation). Subjek dari penelitian ini adalah 20 siswa kelas VIII-2 SMP Negeri 1 Marancar. Teknik pengumpulan data dalam penelitian ini adalah angket, tes, dan dokumentasi. Instrument yang digunakan diantaranya 1) lembar angket berupa angket validasi oleh ahli untuk melihat kevalidan produk dan angket repon siswa untuk melihat kepraktisan produk serta 2) lembar tes keefektifan produk yang dikembangkan. Validasi dilakukan oleh ahli media,ahli materi dan ahli bahasa yang kemudian dilakukan uji coba produk dengan melihat respon penggunaan produk dan hasil tes siswa berdasarkan kemampuan pemecahan masalah matematis. Berdasarkan hasil penelitian ini diperoleh kevalidan produk dengan rata-rata persentase 87% dengan kategori “Valid”, kepraktisan produk dengan rata-rata persentase 95,2% dengan kategori “Sangat Praktis” dan keefektifan produk dengan rata-rata persentase 86,9% dengan kategori “ Sangat Efektif”.

EFEKTIVITAS MEDIA PEMBELAJARAN MATEMATIKA BERBASIS PERMAINAN EDUKATIF ULAR TANGGA UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA SMA DI ANGKOLA BARAT

Tara Mashuri Simbolon — 2026-03-18

The research conducted aims to determine the effectiveness of educational game-based mathematics learning media snakes and ladders to improve mathematical problem-solving skills of class X-2 students of SMA Negeri 1 Angkola Barat. The research method used in this study is using classical completeness. The subjects in this study came from 3 validators, as well as class X-2 students. The data collection technique used was using a questionnaire validation question and test for effectiveness testing. The results of the test question instrument validation analysis obtained a total percentage of achievement of 90% with the category "Very Valid". The results of the effectiveness data analysis obtained an overall average value of 75.45 with the category "Complete" and a percentage of completeness of 64.70% with the category "Effective". Based on the results obtained, it can be concluded that the resulting learning media is valid, practical, and effective.

EFEKTIVITAS MODEL PEMBELAJARAN KONTEKSTUAL TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA DI SMK NEGERI 1 ANGKOLA TIMUR

Desmiati Harahap — 2026-03-18

Students pay less attention to the teacher during the learning process because students find it difficult to understand the learning material, especially in mathematics. The purpose of this study was to determine the effectiveness of the contextual learning model on students' mathematical problem-solving abilities on the material of two-variable linear equation systems in Class X of SMK Negeri 1 Angkola Timur. The type of research used by the researcher is quantitative research. In this study, the researcher used the True-Experienced Design design with the One Group Pretest and Posttest Design type. The population was all students of Class X at SMK Negeri 1 Angkola Timur consisting of 6 classes totaling 92 students. Based on the data analysis, the researcher drew conclusions based on the results of data collection, there was an effectiveness of the contextual learning model on the material of two-variable linear equation systems on students' mathematical problem-solving abilities. This is evidenced by the results of the paired sample test that has been conducted in the experimental class. It can be concluded that H0 in the experimental class is rejected and Ha is accepted because the sig value (2-tailed) in the experimental class is 0.00 less than 0.05. Furthermore, based on inferential statistics using the pair sample t-test, (SPSS version 27), the results show a significance value of less than 0.05 (0.000 < 0.05). This means that the constructivism learning model is effectively used for the mathematical problem solving abilities of class X students of SMK Negeri 1 Angkola Timur.

PENGEMBANGAN MEDIA PEMBELAJARAN MENGGUNAKAN GAME EDUCAPLAY MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA KELAS VII SMP NEGERI 3 PADANGSIDIMPUAN

Ummi Fadilla — 2026-03-18

This study aims to develop a learning medium using the Educaplay game to enhance the mathematical problem-solving skills of seventh-grade students at SMP Negeri 3 Padangsidimpuan. The study employs the ADDIE development model, which consists of five phases: analysis, design, development, implementation, and evaluation. The instruments used include validation sheets, practicality questionnaires, and problem-solving ability tests. The research subjects consisted of 23 students. Validity was determined based on assessments by three expert validators, each with expertise in the research variables. Practicality was assessed through student responses to the developed product via a questionnaire. Effectiveness was evaluated using student test scores.The analysis results show that the learning media using the Educaplay game for the topic of ratios achieved a validity percentage of 83.0%, categorized as very valid. The practicality reached 92.9%, categorized as very practical. The effectiveness was 100%, with more than 85% of students achieving mastery, indicating effective criteria. In conclusion, the development of the Educaplay learning media can enhance the mathematical problem-solving skills of seventh-grade students at SMP Negeri 3 Padangsidimpuan.

Indonesia

andre kristian siallagan — 2026-03-18

This study aims to implement an Augmented Reality-based Student Worksheet (LKPD) on the topic of three-dimensional shapes with flat surfaces to optimize the mathematical conceptual understanding of junior high school students in Pinangsori. The study uses the Plomp development model, which consists of five phases: initial investigation, design, realization, testing-evaluation-revision, and implementation. The instrument used is a test sheet measuring students' mathematical conceptual understanding. The research subjects consist of 29 students. Effectiveness is determined based on students' test scores. The analysis results show that the Augmented Reality-based LKPD (BASTAR) for the topic of three-dimensional shapes with flat surfaces has an effectiveness of 96%>85% of students achieving mastery with effective criteria. The conclusion of the study is that the implementation of the Augmented Reality-based LKPD (BASTAR) is considered effective for teaching three-dimensional shapes with flat surfaces to junior high school students.

KAJIAN ETNOMATEMATIKA PADA CANDI BAHAL DI KABUPATEN PADANG LAWAS UTARA

Hendri Muliadi — 2026-03-18

Bahal Temple is a Vajrayana Buddhist temple complex located in Bahal Village, Padang Bolak District, North Padang Lawas Regency, North Sumatra Province. This temple complex consists of three main buildings, namely Biaro Bahal I, Biaro Bahal II, and Biaro Bahal III, which are arranged in a straight line and constructed using red bricks. In addition to its high historical and cultural value, Bahal Temple also contains various mathematical concepts that can be studied through an ethnomathematical approach. This study aims to identify and describe the mathematical concepts embedded in the structure and ornaments of Bahal Temple and to analyze its potential as a source of contextual mathematics learning at the junior and senior high school levels. The research method used is a qualitative study with a descriptive-ethnographic approach through observation, documentation, and literature review. The results show that Bahal Temple contains concepts of solid geometry, symmetry, repeating patterns, as well as ratio and proportion. These findings indicate that Bahal Temple has great potential as a meaningful and contextual source of ethnomathematics learning

PENGEMBANGAN E-MODUL MATEMATIKA DENGAN BANTUAN HEYZINE UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA

jefri yosua Simorangkir — 2026-03-18

This study aims to develop a mathematics e-module assisted by Heyzine to enhance students¡¯ mathematical problem-solving abilities at SMP Negeri 1 Batang Toru. It also seeks to evaluate the validity, practicality, and effectiveness of the instructional media using the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation).The participants of the study consisted of 29 eighth-grade students (class VIII-2) from SMP Negeri 1 Batang Toru. Data were collected through questionnaire,tests, and documentation. The instruments employed included 1) Validation questionnaires completed by experts to assess product validity and student response questionnaires to determine product practicality; and 2) Test sheets to measure the effectiveness of the developed product. Validation was conducted by media, content, and language experts. Subsequently, a field trial was carried out to assess students’ responses and test results related to mathematical problem-solving skills. The findings indicated that the developed product achieved an average validity score of 88.9%, categorized as "Valid"; an average practicality score of 94.62%, categorized as "Highly Practical"; and an average effectiveness score of 82.59%, categorized as "Highly Effective". The statistical analysis yielded a significance value of 0.000 < 0.050, and the N-Gain score was 0.7, falling into the "High" category, with a gain effectiveness of 70.49%, indicating it is Effective.

ETNOMATEMATIKA PADA PERMAINAN TRADISIONAL EKLEK SEBAGAI MEDIA PEMBELAJARAN GEOMETRI DI SEKOLAH DASAR

Renni Juwita Tanjung — 2026-03-18

Ethnomathematics is an approach that connects mathematics with the culture of society. Traditional games, as part of local culture, contain various mathematical activities that can be utilized in learning. This study aims to examine the ethnomathematical elements in the traditional game eklek and to analyze its potential as a learning medium for geometry in elementary schools. The research method used is a descriptive qualitative approach with an ethnographic perspective through observation, documentation, and analysis of the structure of the playing field. The results show that the eklek game contains plane figure concepts such as squares, rectangles, trapezoids, and semicircles, as well as concepts of measurement, number patterns, symmetry, and spatial reasoning. The use of the eklek game in mathematics learning can increase student engagement, conceptual understanding, and positive attitudes toward mathematics

PENGEMBANGAN E-MODUL DENGAN PENDEKATAN STEM BERBASIS VIDEO ANIMASI UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS MATEMATIKA SISWA KELAS VIII-3 SMP NEGERI 1 PADANGSIDIMPUAN

Halimatussakdiyah Harahap — 2026-03-18

This research aims to develop a video animation-based E-module with a STEM approach, which is expected to enhance students' critical thinking skills in mathematics learning, particularly in the material of linear equations in one variable. Critical thinking skills are essential for 21st-century students as they can improve analytical, evaluative, and problem-solving abilities. The research method used is Research and Development (R&D) with the 4D model, which includes the stages of Define, Design, Develop, and Disseminate. The subjects of the study are 34 students from class VIII-3 at SMP Negeri 1 Padangsidimpuan. The data collection instruments consist of validation sheets from material experts, media experts, and language experts, student response questionnaires, and tests of mathematical critical thinking skills before and after the use of the E-module. The results show that the developed E-module received a validity score of 95.66% (very valid), practicality of 87.12% (very practical), and effectiveness of 93.84% (very effective). Based on these results, the video animation-based E-module with a STEM approach is deemed suitable as an innovative, interactive, and contextual alternative learning media to enhance students' critical thinking skills.

Bagaimana Berpikir Kreatif Termanifestasi dalam Komunikasi Matematis Siswa pada Penyelesaian Masalah Geometri Dua Dimensi: Perspektif Commognitive

Muhammad Rizal Usman — 2026-04-01

Mathematical communication skills and creative thinking are two essential aspects of mathematics learning; however, studies examining how creative thinking is manifested within mathematical communication remain limited. This study aims to describe how creative thinking is manifested in students’ mathematical communication when solving two-dimensional geometry problems from a commognitive perspective. This research employed a qualitative approach with a single-case study design. The research subject was one student who demonstrated a variety of strategies in solving contextual 2D geometry problems. Data were collected through written tasks and semi-structured interviews, and were analyzed based on the components of commognitive discourse, namely the use of mathematical terms, visual representations, argumentative narratives, and solution patterns. The findings indicate that creative thinking is manifested through variations in representation, flexibility of strategies, originality in constructing arguments, and elaboration of mathematical explanations. These findings suggest that creativity can be identified through the structure of students’ mathematical communication and contribute theoretically to the integration of creativity within mathematical discourse analysis.

IMPLEMENTASI PTK BERBASIS LESSON STUDY MELALUI PENERAPAN MEDIA INTERAKTIF CANVA AI TERHADAP HASIL BELAJAR PESERTA DIDIK

Sabrina Annastiar — 2026-04-02

Penelitian ini dilatarbelakangi oleh rendahnya hasil belajar matematika siswa akibat pembelajaran yang masih berpusat pada guru sehingga aktivitas dan keterlibatan siswa kurang optimal. Kondisi tersebut mendorong perlunya penerapan strategi kolaboratif yang dapat memperbaiki kualitas pembelajaran. Lesson Study yang dipadukan dengan Canva AI dipilih sebagai alternatif karena dinilai mampu menghadirkan pembelajaran yang lebih menarik dan sesuai dengan karakteristik siswa. Tujuan penelitian ini adalah meningkatkan hasil belajar matematika siswa kelas XI-2 SMAN 9 Yogyakarta melalui penerapan Lesson Study berbantuan Canva AI. Penelitian ini merupakan Penelitian Tindakan Kelas model Kemiis dan Mc Taggart yang dilaksanakan dalam dua siklus dengan tahapan perencanaan, pelaksanaan, pengamatan, dan refleksi. Data diperoleh melalui tes hasil belajar pada setiap akhir siklus dan dianalisis menggunakan rata-rata, ketuntasan belajar, dan daya serap. Hasil penelitian menunjukkan peningkatan pada seluruh indikator hasil belajar. Rata-rata nilai meningkat dari 49 menjadi 66 pada Siklus I dan 80 pada Siklus II. Ketuntasan belajar meningkat dari 27% menjadi 50% pada Siklus I dan 87% pada Siklus II, sedangkan daya serap meningkat dari 49% menjadi 66% dan 80% pada masing-masing siklus. Dengan demikian, Lesson Study berbantuan Canva AI terbukti mampu meningkatkan keterlibatan dan hasil belajar siswa serta mendukung peningkatan profesionalisme guru.