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All Journal Jurnal Pendidikan Matematika (Jupitek) JISIP: Jurnal Ilmu Sosial dan Pendidikan JUPE : Jurnal Pendidikan Mandala ScienceEdu : Jurnal Pendidikan IPA Edumatica: Jurnal Pendidikan Matematika Jurnal Pengabdian Masyarakat Bhinneka
Ruamba, Marthinus Yohanes
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Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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Ethnomathematical Exploration in Traditional Houses or Asmat Tribe as a Source of Mathematics Learning s, Lisnawati; Kho, Ronaldo; Tandililing, Pitriana; Sirampun, Elsi; Ruamba, Marthinus Yohanes
JUPE : Jurnal Pendidikan Mandala Vol 10, No 2 (2025): JUPE : Jurnal Pendidikan Mandala (Juni)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jupe.v10i2.8977

Abstract

This research is a qualitative study with an ethnographic approach. The purpose of this research is to analyze and describe the ethnomathematics activities, the mathematical elements found in the traditional Jew house of the Asmat tribe, and the mathematical elements in the Jew house that can be used as a source for mathematics learning. Data collection in this research was conducted through observation, interviews, and documentation. The instruments in this study are the research itself as the main instrument, along with supporting instruments in the form of interview guidelines and observation guidelines. Interviews were conducted with two informants, namely the Jew elders and the Asmat community, who are believed to have knowledge and understanding of how to build traditional houses and their components, as well as the meanings contained within these traditional houses. The research results show that there are ethnomathematics activities in the Jew traditional house, namely counting, locating, measuring, designing, and explaining. The mathematical elements found in the Jew traditional house are rectangles, triangles, cuboids and cubes, cylinders, arithmetic operations, area and volume, and distance. The results of this research can be used to develop mathematics learning tools.
Geometric Thinking Levels in Learning Quadrilaterals: A Van Hiele-Based Case Study in a Papuan Junior High School Tandililing, Pitriana; Sirampun, Elsi; Kho, Ronaldo; Ruamba, Marthinus Yohanes
Edumatica : Jurnal Pendidikan Matematika Vol 15 No 2 (2025): Edumatica: Jurnal Pendidikan matematika (Agustus 2025)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/edumatica.v15i2.43719

Abstract

This study investigated the geometric thinking levels of eighth-grade students in a Papuan junior high school, using the van Hiele theoretical framework, with a focus on their understanding of quadrilaterals. The research addressed common misconceptions and limited conceptual understanding among students by exploring how they classified, identified, and described the properties of quadrilaterals. A qualitative descriptive design was employed, involving 25 students selected through purposive sampling. Data were collected using structured interviews, drawing tasks, and classification activities. The primary instrument included three tasks: drawing various quadrilaterals, identifying and defining their properties, and classifying them based on shared attributes. The results showed that 50% of students operated at van Hiele Level 0 (Visualization), 36% were transitioning between Level 0 and Level 1 (Analysis), and only 14% reached Level 1. Students frequently relied on visual appearance rather than formal geometric attributes, leading to persistent misconceptions about hierarchical relationships among shapes. No students demonstrated reasoning beyond Level 1. The findings emphasized the need for instructional approaches that integrate cultural context, use dynamic visual tools, and scaffold learning to support higher-order geometric reasoning. Further research is recommended to develop culturally responsive models and extend the study across different educational contexts.
Ethnomathematical Exploration of Numeration Systems: The Mee Tribal Indigenous Community Ruamba, Marthinus Yohanes; Kho, Ronaldo; Lumbantobing, Happy; Edoway, Naftali
ScienceEdu Vol. 8 No. 1 (2025)
Publisher : Program Studi Pendidikan IPA FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/se.v8i1.53688

Abstract

This study aims at documenting and analyzing the traditional number system of the Mee tribe in Papua within an ethnomathematics framework. Papua is a cultural well with the numeral system reflecting the values of the culture and the social structure of the society. Such integration of culturally based mathematical concepts with the help of the ethnometematic approach might be theoretically expected to enhance mathematical learning, relevant from a cultural point of view. Qualitative research with participatory observation, in-depth interviews, and artifact analysis was carried out in Sentani-Sereh. From the research, it can be said that the uniqueness of the combination between single and decimal numbers can indicate the structure of the Mee Tribe culture. This system shows a possibility for implementation in culture-based learning. This documentation leans more towards cultural preservation efforts, enriching the literature of ethno-mathematics and recognizing traditional knowledge, which is part of cultural heritage and needs to be preserved in the wave of modernization
The Use Of Jigsaw Type Cooperative Learning Model On Algebraic Factorization Tandililing, Pitriana; Ruamba, Marthinus Yohanes
JISIP: Jurnal Ilmu Sosial dan Pendidikan Vol 9, No 3 (2025): JISIP (Jurnal Ilmu Sosial dan Pendidikan) (Juli)
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jisip.v9i3.8722

Abstract

This study aims to describe the implementation of the Jigsaw cooperative learning model in teaching algebraic factorization to eighth-grade students at SMP Negeri 1 Depapre, Jayapura Regency. Using a descriptive qualitative approach, this research examines the improvement in students' understanding and skills through expert and home group-based learning. Data collection was conducted through written tests and observations, focusing on student activity and instructional implementation. The findings indicate that the Jigsaw model significantly enhances student learning outcomes, achieving average scores above the minimum competency standards, along with positive changes in aspects of cooperation, responsibility, and student attitudes. This model is recommended for broader application to improve the quality of mathematics instruction in junior high schools.
Penggunaan Alat Peraga Truk Perkalian dan Corong Pembagian untuk Meningkatkan Pemahaman Konsep Matematika Siswa Tandililing, Pitriana; Ruamba, Marthinus Yohanes
Jurnal Pengabdian Masyarakat Bhinneka Vol. 3 No. 4 (2025): Bulan Juli
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v3i4.178

Abstract

Kegiatan pengabdian ini bertujuan untuk meningkatkan pemahaman siswa terhadap konsep perkalian dan pembagian melalui penggunaan alat peraga inovatif berupa truk perkalian dan corong pembagian. Metode yang digunakan mencakup persiapan, pelaksanaan pembelajaran, observasi, dan evaluasi. Kegiatan dilaksanakan di kelas III SD Inpres Pasir 2 Jayapura. Hasil menunjukkan bahwa penggunaan alat peraga mampu meningkatkan antusiasme, pemahaman, serta partisipasi aktif siswa dalam proses pembelajaran. Evaluasi akhir menunjukkan peningkatan nilai dan pemahaman yang signifikan. Kegiatan ini merekomendasikan penggunaan alat peraga konkret dalam pembelajaran matematika untuk siswa sekolah dasar.
KEMAMPUAN REPRESENTASI MATEMATIS CALON GURU MATEMATIKA PADA MATA KULIAH TEORI PELUANG Ruamba, Marthinus Yohanes; Mastur, Zaenuri; Kharisudin, Iqbal
Jurnal Pendidikan Matematika (JUPITEK) Vol 5 No 1 (2022): Jurnal Pendidikan Matematika (JUPITEK)
Publisher : Program Studi Pendidikan Matematika FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jupitekvol5iss1pp34-41

Abstract

In understanding mathematics learning, representation is considered an entry point in solving various complex mathematical problems. The ability of mathematical representation is related to the expression of mathematical ideas using various ways, including written language, spoken language, pictures, symbols, examples, diagrams, graphs, or other real examples as representations. The research design used is mixed research (Mixed Method). The subjects in this study were 17 prospective mathematics teacher students, but then 3 (three) people were selected as subjects to be interviewed. Consists of subjects with high category (S1), subjects with medium category (S2), and subjects with low category (S3). Data collection was carried out using test instruments in the form of description questions in the probability theory course. From the test results, after being examined, students were selected to represent each category. Furthermore, by using the results of student tests, interviews were conducted to compare the results of interviews with student answers. The results of the written test and the results of the interview test were then analyzed to determine the student's representational ability. The results of this study indicate that students' mathematical representation skills in the probability theory course are still relatively low, this can be seen in 3 (three) subjects after matching the results of the written test and the results of the interview test. Individuals with high categories can meet the indicators of expression representation or mathematical equations and verbal representations. Subjects in the medium category were able to fulfill the indicators of mathematical representation or expression. Low subjects were not able to fulfill one of the three indicators of mathematical representation ability
Implementation of the Guided Discovery Learning Model Assisted by Parachute Teaching Aids on the Material of Relationships Between Angles Sari, Annisa Kurnia; Tandililing, Pitriana Yohanes; Sirampun, Elsi; Lumbantobing, Happy; Ruamba, Marthinus Yohanes
JUPE : Jurnal Pendidikan Mandala Vol 10, No 3 (2025): JUPE : Jurnal Pendidikan Mandala (September)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jupe.v10i3.8951

Abstract

This research is a descriptive qualitative research. The subjects of this research were 31 students of class VII A of SMP YPPK Santu Paulus Abepura. The selection of subjects used the purpose sampling technique. The research instruments used were individual tests, teacher observation sheets and student observation sheets. This study aims to describe the implementation of the guided discovery learning model on the material of relationships between angles assisted by parachute teaching aids (line and angle boards) in class VII A of SMP YPPK Santu Paulus Abepura. Based on the results and discussion of the learning process by applying the guided discovery learning model on the material of the relationship between angles assisted by parachute teaching aids (line and angle boards) has gone very well. This is shown in the results of observations and individual tests falling into the very good category with the percentage of teachers in applying the guided discovery learning model of 97.89%, student activity of 94.21%, and an average individual test score of 92.74. By applying the guided discovery model to the material of the relationship between angles assisted by parachute teaching aids, students can become active and motivated in participating in mathematics learning.
Co-Authors Edoway, Naftali Happy Lumbantobing, Happy Iqbal Kharisudin Pitriana Tandililing Ronaldo Kho s, Lisnawati Sari, Annisa Kurnia Sirampun, Elsi Tandililing, Pitriana Yohanes Zaenuri Mastur