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This Community Partnership Program (PKM) aims to improve the competence of mathematics teachers at Madrasah Tsanawiyah (MTs) in Lumajang Regency in developing ethnomathematics-based teaching materials integrated with Augmented Reality (AR) technology. This program was initiated due to the minimal use of local culture in mathematics learning and the low ability of teachers to develop innovative teaching materials. The activity was carried out in four main stages: socialization, training, technology application, and mentoring and evaluation. The training included an introduction to the concept of ethnomathematics, the preparation of differentiated teaching materials, and the creation of AR-based learning media using Unity 3D, Blender, Geogebra, and Vuforia. The results of the activity showed an increase in teachers' understanding of the concept of ethnomathematics and their ability to integrate the local cultural values of Lumajang into mathematics learning. In addition, teachers successfully produced contextual AR-based interactive teaching materials in line with the spirit of the Merdeka Curriculum. This activity also strengthened collaboration between lecturers, students, and teachers of the MTs Wilker III Mathematics MGMP and became a model for continuous training in the development of innovative learning media based on local wisdom and digital technology.

This research aims to improve the mathematics learning outcomes of Grade VII B students at SMP Darul Ulum 5 Rebalas through the implementation of Madurese language-based ethnomathematics. The study is motivated by the students' difficulties in understanding mathematical concepts delivered in formal Indonesian, as their daily communication relies on the specific Madurese dialect of Rebalas Village. This study employs the Classroom Action Research (CAR) method using the Kemmis and McTaggart model, conducted in two cycles. Each cycle consists of planning, action, observation, and reflection stages. The subjects of this research were 28 students from class VII B. The research instruments included test instruments in the form of group Student Worksheets (LKPD) and observation sheets for both teacher and student activities. The material focused on the topic of Lines and Angles. The results indicated an improvement in student learning outcomes from Cycle I to Cycle II. In Cycle I, the average group score was 80.2, which increased to 88 in Cycle II. Observations of student activities also showed a shift from passive participation in Cycle I to active and enthusiastic engagement in Cycle II. Furthermore, teacher observations showed significant improvement; initial issues regarding time management and excessive workloads were resolved, resulting in more enthusiastic and punctual teaching delivery. These findings demonstrate that the use of Madurese-based ethnomathematics helps students grasp mathematical terms more easily, increases discussion participation, and creates a more comfortable and interactive classroom atmosphere, thereby leading to improved learning outcomes.

The background of this research is the richness of Indonesian culture that is very diverse from Sabang to Merauke. Education and culture are now hot topics. Mathematics, as an important subject, is often considered difficult and boring due to monotonous learning and lack of motivation. Therefore, it needs improvement by connecting mathematical materials with local culture to make it more relevant in everyday life. The purpose of this research is to determine the effectiveness of E-LKPD flat shapes on the collage of Joglo traditional houses based on ethnomathematics in the mathematics learning process of flat shapes material which is expected to enable students to love their ancestral culture. The research method used is descriptive qualitative with the type of design research. Design research consists of 3 stages, namely experimental preparation, experimental implementation, and retrospective analysis. Data collection techniques with observation, questionnaires, and documentation. The results of the study are the implementation of E-LKPD collage based on ethnomathematics of Joglo traditional houses on flat shapes material runs effectively and can foster a sense of love for ancestral culture. This conclusion was obtained based on the suitability between ALT and HLT. Furthermore, the results of this study can be the basis for the development of the next E-LKPD by utilizing other cultures that are close to the daily lives of student.

Many students have difficulty in learning mathematical concepts, especially in the material of curved-sided spatial figures, in addition, knowledge of regional culture is still lacking. This is due to the limited use of teaching materials in learning which has an impact on students' interest in learning. The purpose of this study is to develop teaching materials in the form of e-modules with an ethnomathematics approach to curved-sided spatial figures that are suitable for use, as an alternative to other teaching materials that can be used in learning. The type of research method used is the Research and Development (R&D) method with a 4D development model (Define, Design, Develop, Disseminate). The subjects of this study were grade IX students at SMPN 2 Kaledupa. The instruments used to measure the validity and practicality of the teaching materials developed were in the form of a validation questionnaire from material experts and media experts and a student response questionnaire. The data obtained from measuring validity and practicality were then processed using quantitative and qualitative descriptive analysis. The results of the research on the development of teaching materials with an ethnomathematics approach show that the developed learning e-module is declared feasible to use based on the assessment results of the material expert and media expert validators. The average score percentage obtained from the material expert validator is 89.06% with very valid criteria. While the average score percentage from the media expert validator is 86.45% with very valid criteria. In addition, the learning e-module with an ethnomathematics approach is also declared practical to use based on the results of the student response assessment. The average percentage of the overall student response assessment score is 89.93% with very practical criteria.

Exploration of ethnomathematics in the context of flat geometry, especially triangles, in traditional Batak Toba clothing, is an interesting and important study. This study aims to reveal the relationship between mathematical concepts and local culture, and how geometric elements can be found in the design of Sortopi traditional clothing. This research method uses a qualitative approach with data sources, namely library studies, from several literature reviews according to the topic and purpose of the study. The results of the study show that Sortopi is a complement to traditional Batak clothing used by men as a crown or headband. The shape of Sortopi contains elements of isosceles triangle flat geometry, thus showing that cultural elements are inseparable from mathematics.

This research aims to examine students' abilities in describing mathematical concepts through Realistic Mathematics learning methods that adopt Ethnomathematics principles. This method encourages students to understand mathematical concepts through real-world situations that are relevant to their culture and context. The research was conducted using qualitative and quantitative approaches in a secondary school in Indonesia. Data was collected through classroom observations, interviews with teachers and students, as well as analysis of test results and student assignments. The research results show that the use of Realistic Mathematics Learning Methods that integrate Ethnomathematics principles can significantly improve students' abilities in describing and applying mathematical concepts in the context of everyday life related to their culture. The implication of this research is the importance of integrating cultural aspects in mathematics learning to increase student engagement and understanding of the subject.

The conscious or unconscious entry of mathematics into various aspects of life is certainly interesting to study such as from a cultural point of view. What can bridge the gap between culture and mathematics is ethnomathematics. Ethnomathematics is a study of the relationship between mathematics and culture. The study of mathematics in culture needs to be developed further to be able to provide an overview to the public about the role of mathematics in culture. one of the tribes that is rich in culture is Toraja, for example in Toraja carving which is a cultural heritage that is passed down from generation to generation until now there is the concept of geometry. Therefore, the purpose of this research is how the concept of geometry in Toraja carving using qualitative research methods ethnographic approach.

Ethnomathematics contributes greatly to the improvement of mathematics learning, because it relates to students' experiences in everyday life that touches the realm of local cultural arts so that students become more understanding of the mathematical concepts explained. This study aims to explore the concept of mathematics in the traditional game of congklak in Srengseng Sawah Village. This research is a qualitative research with an ethnographic approach. The data collection techniques used are observation, interview and documentation. The instruments in this study were researchers, observation guidelines, interview guidelines and documentation. Based on the research analysis and discussion of the history and philosophy of the traditional game of congklak, mathematical concepts in the game of congklak such as the concept of flat shapes, namely semicircles, circles, rectangles and spatial shapes, namely half a ball; the concept of transformation in this case reflection / mirroring; the concept of arithmetic calculation operations including addition, subtraction, multiplication and division. The game also has cultural and philosophical values.

The purpose of writing this article is to present a learning design using the Ethnomathematics-based Realistic Mathematics Education learning model to provide several learning design options that can be used by junior high school teachers in providing learning material on geometric transformations. This learning design is devoted to material on geometric transformations, reflection, rotation, dilation and translation which relate to regional culture. This learning design uses steps based on the characteristics of RME. As well as using needs analysis, student analysis, and task analysis.

The purpose of this study is to ascertain how fourth grade students at SDN Keleyan 2 are impacted in terms of their mathematical literacy by realistic math instruction grounded in Madurese ethnomathematics. This is a quantitative study using an experimental research design; a quasi-experimental design and a nonequivalent control group design are the types of research designs employed. 48 SDN Keleyan 2 class IV students served as samples. Classes experimental and control were employed in this study. In this study, tests of mathematical literacy and observation were used as data gathering methods. The data analysis includes an independent sample t-test for hypothesis testing, homogeneity testing, and a prerequisite test utilizing the normality test. Ho is rejected and Ha is approved based on the findings of the independent sample t-test data analysis, which showed that t-test = 7,757 > t-table = 2,012. As a result, it was determined that fourth grade pupils at SDN Keleyan 2 had significantly higher mathematical literacy levels when the model realistic mathematic education learning based on Madurese ethnomathematics was applied.

Mathematics is often seen as a deductive science and is not related to social aspects. Even though mathematics grows and develops from socio-cultural practices that occur in society. This is the basis for the development of ethnomathematics concepts. The ethnomathematics concepts in the Bolaang Mongondow community are very diverse. This study aims to describe the implementation of ethnomathematics in learning mathematics at SMP Negeri 7 Kotamobagu, especially in the use of regional languages ​​and symbols of the Bolaang Mongondow Kabela Box Craft. The data obtained is in the form of qualitative data while the sources are obtained from interviews, observation, and documentation from informants (teachers, students and craftsmen). The main instrument is the researcher, while the supporting instruments used are interview guides and documentation. The results showed that the regional language and the symbols of the Bolaang Mongondow Kabela Box craft really helped teachers and students in the process of learning mathematics at SMP Negeri 7 Kotamobagu.

This research aims to produce learning media for the Ethnomathematics Student Worksheet on Traditional Market Snacks in Pontianak City on the flat-sided building material that reaches the level of validity, practicality, and effectiveness. This study uses a 4D design model, which is modified into 3D, namely define (definition), design (design), development (development), without using the fourth stage, namely disseminate, because this refers to the initial goal of this research is to develop valid, practical and effective media contained in the third step of the development of this model, namely development. The subjects in this study were students of class VIII SMP Suster Pontianak with a total of 20 students. The instruments used in this study were validation sheets, questionnaires, and test questions. Based on the results of the first study, the validation of the Ethnomathematics Student Worksheet with an average value of 84,76% from expert activities was very valid with a very good category. The second is the value of practicality, seen from the value of the questionnaire filled in by the teacher, the percentage is 97% with very practical criteria. to see the effectiveness of the ethnomathematics-based student worksheet learning media compared to the Likert scale index, with a percentage of 81.11% in the very effective criteria.    

Metode penelitian yang akan digunakan dalam penelitian ini adalah metode Penelitian dan Pengembangan (RnD). Rancangan penelitian dan pengembangan dalam penelitian ini menggunakan model Thiagarajan yang juga dikenal dengan model 4D yang dimodifikasi menjadi 3D yaitu define (pendefinisian), design (perancangan), dan development (pengembangan). Alat pengumpul data yang digunakan berupa tes kemampuan pemahaman matematis, lembar validasi, dan angket respon guru. Subjek uji coba produk dalam penelitian ini adalah peserta didik kelas VIII A MTs Negeri 2 Sambas yang berjumlah 28 orang. Tujuan dari penelitian ini adalah untuk mengembangkan E-LKPD berbasis Etnomatematika dalam Permainan Senaporan dan Selimban berbantuan Live Worksheet terhadap Kemampuan Pemahaman Matematis pada Materi Peluang di Kelas VIII MTs Negeri 2 Sambas yang dilihat dari tingkat kevalidan, keefektivan dan kepraktisan. Hasil dari rata-rata persentase validasi yang diperoleh adalah 94,44% dengan kriteria sangat valid. Untuk hasil dari angket respon guru memproleh persentase nilai sebesar 96,47% dengan kriteria sangat praktis, maka E-LKPD yang dikembangkan telah dapat dimanfaatkan sebagai bahan ajar dengan sedikit revisi. Ketuntasn belajar klasikal dapat tercapai jika memenuhi 75% dengan nilai peserta didik harus lebih besar atau sama dengan 75. Hasil dari tes peserta didik memperoleh persentase nilai 85,72% dengan kriteria sangat efektif. Dari hasil tersebut dapat disimpulkan bahwa E-LKPD yang dikembangkan layak untuk digunakan.

Judul dari penelitian ini adalah Etnomatematika dalam Tradisi Upacara Adat Maruba  di Kerajaan Hulu Ai’k Kecamatan Hulu Sungai Kabupaten Ketapang. Fokus penelitian ini adalah untuk menemukan 1) Apa saja alat-alat yang digunakan pada tradisi upacara adat maruba yang mengandung unsur matematika? 2) Apa saja aktivitas upacara adat maruba yang mengandung unsur matematika?. Metode penelitian yang digunakan dalam penelitian ini adalah Metode Deskriptif kualitatif! Bentuk penelitian ini merupakan studi kasus yang bertujuan untuk menghimpun atau menganalisis data berbagai fenomena-fenomena yang menjadi subjek penelitian di sini peneliti memberikan pertanyaan-peratanyaan dan tes yang terstruktur kemudian data dianalisis secara kualitatif deskriptif untuk mengetahui kebenaran yang terdapat pada lokasi penelitian. Data dan jenis data dalam penelitian ini adalah data primer dan data sekunder. Alat yang digunakan untuk mengumpulkan data adalah dengan menggunakan lembar observasi, pedoman wawancara dan dokumen. Hasil penelitian menuajukan bahwa alat-alat tradisional tradisi upacara maruba dikerajaan hulu sungai etis Dayak krio yang dapat digunakan dalam pembelajaran matematika di sekolah yaitu ketawak/ gerantung, mangkok tanah, kain batik, tempayan, bosi/parang, ancak, piring keramik,pahar, tanduk kerbau, dan kain kuning, adapun materi matematika yang dapat mengunakan alat-alat tradisional tradisi upacara adat maruba di kerajaan hulu sungai etis Dayak krio tersebut adalah, namgun datar, bangun ruang, dan oprasi bilangan bulat. Selanjutnya, ada enam aktivitas yang terdapat didalam tradisi upacara adat maruba dikerajaan hulu aik suku Dayak krio  yang mengandung unsur matematika antara lain aktivitas  duduk gae, begamal betabuh menari maigal, beramu, pencucian benda pusaka, buang sial tolak bala, dan aktivitas timang tanduk sengiang holing rata-rata materi matematika yang termuat adalah materi membilang, mengukur, dan oprasi hitung, penjumlahan dan perkalian.

Penelitian ini bertujuan untuk mengembangkan e-modul etnomatematika berbasis model pembelajaran inquiry untuk meningkatkan kemampuan berpikir kritis siswa. Dalam e-modul tersebut akan dilhat bagaimana produk awal,  hasil validasi ahli, hasil uji coba, hasil refleksi dan bagaiman produk akhir. Penelitian ini merupakan penelitian pengembangan dengan menggunakan model rancangan 4-D, namun dalam penelitian ini hanya sampai 3-D. Subjek dalam penelitian ini adalah siswa kelas VIII SMP sebanyak 15 siswa dan 3 orang ahli media dan materi. Instrumen yang digunakan dalam penelitian ini adalah lembar validasi ahli media dan ahli materi, pedoman wawancara dan observasi, angket respon guru dan respon siswa, dan soal tes kemampuan berpikir kritis. Hasil penelitian validasi E-modul etnomatematika berbasis model pembelajaran inquiry yaitu validasi media dengan nilai rata-rata dari ketiga ahli sebebsar 83,09% dengan kriteria Cukup valid. Hasil penelitian validasi materi diperoleh skor rata-rata 91,67% dengan kriteria sangat valid. Sedangkan Hasil penelitian validasi etnomatematika diperoleh skor rata-rata 88,98% dengan kriteria sangat valid Yang kedua adalah nilai kepraktisan, dilihat dari nilai angket yang diisi guru dan seluruh siswa yang diakumulasikan sehingga diperoleh persentase sebesar  89,05%  dengan kriteria sangat praktis. Selanjutnya keefektifan, dilihat dari nilai hasil pengerjaan posttest siswa dengan jumlah siswa yang tuntas sebanyak 10 orang dari 15 orang dengan persentase  dengan kriteria efektif dengan berpatokan pada nilai KKM sekolah yaitu 70