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Friska ledina Situngkir
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KAJIAN ETNOMATEMATIKA PADA BENTUK DAN UKURAN BATU LOMPAT DALAM TRADISI HOMBO BATU DIPULAU NIAS Hulu, Yukalfin; Jesse Erikson Hutagaol; Sindi Nababan; Santa Sinaga; Friska ledina Situngkir
JURNAL MULTIDISIPLIN ILMU AKADEMIK Vol. 3 No. 2 (2026): JURNAL MULTIDISIPLIN ILMU AKADEMIK (JMIA)  April 2026
Publisher : CV. KAMPUS AKADEMIK PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jmia.v3i2.8765

Abstract

Culture is the realization of norms, values, and customs that takes important role in education field particularly in the learning of mathematics. South Nias with rich cultures can become reference for mathematics teacher to create media of learning. The very interesting culture that can be used as the media of learning of mathematics is culture which named “hombo batu”. This research aims at identifying hombo batu and describing the mathematics concept that found within it so it can be used as the media of learning of mathematics. This research is designed in qualitative research design through ethnography research approach. The focus of this research is culture “hombo batu” in South Nias Regency. The techniques of data collection that used are observation, intervew and documentation. Based on the results of research and discussion, hombo batu has four mathematical concepts in general, they are truncated rectangular pyramid off at each corner points, edges, side or field, diagonal side, diagonal space, rectangle, trapezoid, nets surface area and volume; the similarities are congruent and congruent respectively, the transformation geometry of each reflection and dilatation, and number patterns, so that the hombo batu culture can be used as a medium for learning mathematics.
ETNOMATEMATIKA PADA MOTIF KAIN (HIOU) BULANG SIMALUNGUN Munthe, Lasmarintan Natalia; Ayu Silaen; Kasih Simanjutak; Gracea Damanik; Friska Ledina Situngkir
JURNAL MULTIDISIPLIN ILMU AKADEMIK Vol. 3 No. 2 (2026): JURNAL MULTIDISIPLIN ILMU AKADEMIK (JMIA)  April 2026
Publisher : CV. KAMPUS AKADEMIK PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jmia.v3i2.8784

Abstract

This study aims to explore the mathematical concepts contained within the motifs of the Hiou Bulang, the traditional head covering worn by Simalungun women, as an effort to find effective learning solutions. The approach utilized is ethnography, focusing on intensive cultural exploration to uncover the implementation of formal mathematical concepts within traditional knowledge. The findings reveal that the motifs of the Hiou Bulang significantly contain ethnomathematics concepts in the field of geometry. The concepts identified include transformational geometry such as 180° rotation (in the Sidomu hail and Bituha boyok motifs) and translation (in the Rayungan sonduk motif), as well as plane geometry concepts like fold symmetry (Jumbu tuou), two parallel lines (Suhi ampang and Goli-goli), and the triangle shape (Pahu-pahu patuddal marbuah tabu). These findings substantiate that local culture can serve as an attractive and effective concrete learning medium to enhance students' comprehension of mathematical concepts.
Kajian Etnobudaya dan Etnomatematika pada Alat Musik Sarune Etek di Samosir Silitonga, Dwi Ramawati; Rutmasari Silaban; Deliana Orcin Kahar; Friska Ledina Situngkir
JURNAL MULTIDISIPLIN ILMU AKADEMIK Vol. 3 No. 2 (2026): JURNAL MULTIDISIPLIN ILMU AKADEMIK (JMIA)  April 2026
Publisher : CV. KAMPUS AKADEMIK PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jmia.v3i2.8803

Abstract

This research explores the Sarune Etek, a traditional wind instrument from Samosir, through ethnocultural and ethnomathematical lenses. Beyond its musical function, Sarune Etek represents a cultural identity of the Batak Toba community and embodies embedded mathematical principles in its physical structure, proportional design, tonal system, and rhythmic patterns. The study applies a qualitative approach through literature analysis, visual observation, and contextual interpretation. The ethnomathematical perspective reveals geometric forms, proportional ratios, quadratic patterns in air column variation, and periodic rhythmic structures. The results indicate that Sarune Etek can serve as an effective contextual medium for teaching mathematical concepts while simultaneously preserving local cultural heritage.
ANALISIS ETNOMATEMATIKA PADA MOTIF ULOS RAGI HOTANG BATAK TOBA Lubis, Hotma Fifia; Audy Sihol Marito Manurung; Prasita Manginar Tesalonika Napitupulu; Friska Ledina Situngkir
JURNAL MULTIDISIPLIN ILMU AKADEMIK Vol. 3 No. 2 (2026): JURNAL MULTIDISIPLIN ILMU AKADEMIK (JMIA)  April 2026
Publisher : CV. KAMPUS AKADEMIK PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jmia.v3i2.8850

Abstract

Mathematics is often perceived as an abstract discipline detached from everyday life, whereas many mathematical concepts are naturally embedded in cultural practices. One form of cultural heritage that contains mathematical elements is Ulos Ragi Hotang, a traditional woven cloth of the Batak Toba community that holds strong ceremonial functions and philosophical values. This study aims to identify and analyze the ethnomathematical concepts embedded in the motifs of Ulos Ragi Hotang and to relate them to formal mathematical concepts. The scope of the study focuses on the analysis of patterns, geometric shapes, repetition, symmetry, ratios, and area found in the arrangement of the motifs. A qualitative research method with an ethnographic approach was employed through visual observation of the motifs, documentation studies, and relevant literature review. The collected data were analyzed descriptively to reveal mathematical elements implicitly present in the structure and composition of the motifs. The findings indicate that Ulos Ragi Hotang motifs contain various mathematical concepts, including repeating patterns and sequences, plane figures such as triangles and rhombuses, parallel lines and angles, reflection and translational symmetry, ratios and proportions, as well as the concept of rectangular area. These concepts function not only as aesthetic elements but also represent Batak Toba cultural values such as balance, harmony, strength, and kinship. The study concludes that Ulos Ragi Hotang has strong potential to be utilized as a contextual and meaningful ethnomathematics-based learning resource in mathematics education while supporting the preservation of local cultural heritage. Furthermore, the findings provide implications for the development of culturally responsive teaching materials that connect mathematical concepts with local traditions, thereby enhancing students’ motivation, conceptual understanding, and appreciation of indigenous culture in contemporary mathematics learning.
Co-Authors Audy Sihol Marito Manurung Ayu Silaen Deliana Orcin Kahar Gracea Damanik Hulu, Yukalfin Jesse Erikson Hutagaol Kasih Simanjutak Lubis, Hotma Fifia Munthe, Lasmarintan Natalia Prasita Manginar Tesalonika Napitupulu Rutmasari Silaban Santa Sinaga Silitonga, Dwi Ramawati Sindi Nababan