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Yohanis Ndapa Deda
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yndapadeda@gmail.com
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+6281224567787
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jurnalrange@unimor.ac.id
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Jl.Km 09 - Kelurahan Sasi, Kec. Kota Kefamenanu, TTU
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Kab. timor tengah utara,
Nusa tenggara timur
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Range : Jurnal Pendidikan Matematika
Published by Universitas Timor
ISSN : 26852373     EISSN : 26852373     DOI : https://doi.org/10.32938/jpm
Core Subject : Education,
Education Mathematics
Range: Jurnal Pendidikan Matematika publishes original research or theoretical papers about teaching and learning in mathematics education study program on current science issues, namely: (1) Mathematics educator in elementary, secondary and high school level, (2) Mathematics observers and researchers, (3) Educational decisions maker on regional and national level. We recommend classroom action research, qualitative, descriptive, or quantitative. We may process manuscript of didactic development research (DDR) or research and development (R & D). Our publication could be research on teaching method, experiment of teaching aid or media, and even effectiveness of lesson study. We accepted any manuscript derived from research of mathematics education. We will not process manuscript from research approach of school management.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 162 Documents
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Exploration of Ethnomathematics in the Tahlilan Tradition of Sungai Malaya: Geometry and Beyond Hodiyanto Hodiyanto; Abdillah Abdillah; Gemi Susanti; Rodríguez-Nieto Camilo Andrés; Ebenezer Bonyah
RANGE: Jurnal Pendidikan Matematika Vol. 8 No. 1 (2026): Range Juli 2026
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v8i1.10743

Abstract

This study aims to explore the ethnomathematical elements embedded in the cultural practice of Tahlilan, particularly those related to geometric concepts. The research employed a qualitative approach with an ethnographic design. The participants consisted of community members directly involved in the implementation of Tahlilan, with the research conducted in settings where this tradition is commonly practised. Data were collected through observation, interviews, documentation review, and a literature study. The data were then analyzed through data reduction, data display, interpretation, and conclusion drawing. The findings indicate that Tahlilan is a religious and social tradition passed down across generations and continues to be preserved to this day. The practice involves a series of activities, including the preparation of traditional foods, repeated recitation of prayers, distribution of food packages (berkat), and social interactions among participants. The ethnomathematical aspects identified include representations of three-dimensional geometric solids in Tahlilan foods, such as cylinders, cones, truncated cones, and pyramids; number patterns reflected in the sequence of days of the Tahlilan observance; proportionality in the distribution of food; and combinatorial structures evident in the handshaking activities among participants. These findings demonstrate a strong connection between the cultural practice of Tahlilan and mathematical concepts, revealing the presence of mathematical thinking within community traditions. Furthermore, this study contributes to the development of culturally based mathematics learning, particularly in the areas of geometry.
Investigating Ethnomathematics in Traditional Farming in Bitefa Village, North Central Timor District Yohanis Ndapa Deda; Stanislaus Amsikan; Otaget Daniel; Maya Purwaningsi Lasfeto
RANGE: Jurnal Pendidikan Matematika Vol. 8 No. 1 (2026): Range Juli 2026
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v8i1.10747

Abstract

The community of Bitefa Village in North Central Timor Regency (TTU) keeps farming corn on dry land as they have done for generations, but they are not aware of the mathematical activities that could be used as a source of mathematics education. The purpose of this study is to explore ethnomathematical activities in the dryland farming culture of corn cultivation in Bitefa Village.  The research method is qualitative with an ethnographic approach. Spradley's ethnographic approach research sequence is used to identify, classify, and interpret ethnomathematical activities embedded locally in traditional dry farming. Data collection is through participatory observation, interviews, and recording of agricultural artefacts. Analysis was conducted using Spradley's research sequence approach, domain analysis, taxonomic analysis, component analysis, and cross-domain theme analysis. The results show that spatial planting patterns aim to facilitate weeding and root competition; informal cultural units of measurement are used with functional adequacy and selective metric verification; seasonal decision-making based on local phenological indicators; a hierarchical aggregation system for crop yields (Pulir-Ikat-Kuda) that facilitates calculation, exchange, and estimation; and ritual-social mechanisms that legitimize and coordinate collective agricultural efforts. This study suggests that applying mathematical exercises to traditional corn farming methods, such as comparing or converting local units to standard units and forecasting corn seeds based on farm size, could be a source of learning in mathematics education in the classroom.

Page 17 of 17 | Total Record : 162

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