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All Journal Indo-MathEdu Intellectuals Journal
Sitepu, Edi Petra
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Mathematics

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Eksplorasi Alat Musik Keteng-Keteng Terhadap Bangun Ruang Sisi Lengkung Tabung Sitepu, Edi Petra; Tambunan, Hardi; Simanjuntak, Ruth Mayasari
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.4116

Abstract

This study aims to examine the relationship between the traditional Keteng-keteng musical instrument from Batak Karo and the concept of curved tube space construction from an ethnomathematics perspective. The research uses Spradley's ethnographic approach with data collection techniques through observation, interviews, and documentation. The data obtained is analyzed using Spradley's ethnographic analysis model, which includes domains, taxonomy, components, and cultural themes, thereby providing a deep understanding of the relationship between cultural objects and mathematical concepts. The results of the study show that the bamboo structure of Keteng-keteng is tube-shaped, characterized by two circular bases and a curved cover. This finding indicates that Keteng-keteng can be used as an ethnomathematics learning medium to introduce the concept of tubes to students. In addition, this study also contributes to efforts to preserve local culture through the integration of traditional elements into mathematics learning.
Eksplorasi Pemanfaatan Alat Musik Keteng-Keteng Sebagai Media Pembelajaran Bangun Ruang Sisi Lengkung Tabung di Kelas IX SMP Sitepu, Edi Petra; Tambunan, Hardi; Pangaribuan, Firman
Indo-MathEdu Intellectuals Journal Vol. 7 No. 1 (2026): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i1.5134

Abstract

This study aims to describe the use of keteng-keteng musical instruments as a medium for teaching mathematics on the subject of curved tube shapes in ninth grade junior high school. The study uses a descriptive qualitative approach with ninth grade junior high school students as the research subjects. Data collection was carried out through observation of the learning process, interviews with students and teachers, and documentation of learning activities. Data analysis was carried out through the stages of data reduction, data presentation, and conclusion drawing using triangulation techniques to maintain data validity. The results showed that the use of keteng-keteng musical instruments helped students understand the concept of cylinders more concretely through direct observation of the shape, elements, and characteristics of cylinders. In addition, the use of this locally-based media was able to increase student engagement, interest in learning, and activity in the mathematics learning process. Thus, the keteng-keteng musical instrument can be used as an alternative contextual and meaningful learning media for mathematics in the subject of curved tube shapes.  
Co-Authors Firman Pangaribuan Ruth Mayasari Simanjuntak Tambunan, Hardi