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All Journal Jurnal Ilmiah Mandala Education (JIME) Indo-MathEdu Intellectuals Journal
Sihombing, Artha Hadia
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Arts Humanities Education Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences

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Exploration of the Keteng-Keteng Musical Instrument in Learning the Surface Area of Cylinders at SMPS Deli Murni Bandar Baru Sihombing, Artha Hadia; Tambunan, Hardi; Simanjuntak, Ruth M
Jurnal Ilmiah Mandala Education (JIME) Vol 11, No 3 (2025): Jurnal Ilmiah Mandala Education (Agustus)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jime.v11i3.9096

Abstract

This research aims to explore the potential of traditional musical instruments.Keteng-Ketengas a contextual media in learning the concept of surface area of cylinders at the junior high school level. This musical instrument is known in the Batak Karo culture and has a distinctive cylindrical shape, making it relevant for use in understanding spatial figures. The research was conducted at SMPS Deli Murni Bandar Baru with an ethnomathematics approach. The method used was descriptive qualitative with observation, interview, and documentation techniques. The results showed that the use of Keteng-Keteng in learning was able to improve students' understanding of the surface area of cylinders and create a contextual, meaningful learning atmosphere rooted in local culture.
Analisis Problematika dan Evaluasi Pelaksanaan Kurikulum dalam Pembelajaran Matematika di SMPS Deli Murni Bandar Baru Sihombing, Artha Hadia; Sitepu, Ribka Zelin Margaretha; Panggabean, Ellis Mardiana; Situmorang, Adi Suarman
Indo-MathEdu Intellectuals Journal Vol. 6 No. 8 (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.v6i8.4690

Abstract

This study aims to analyse the problems and evaluate the implementation of the curriculum in mathematics learning at Deli Murni Bandar Baru Junior High School. The research used a qualitative descriptive approach with mathematics teachers and related parties at the school as the research subjects. Data were collected through in-depth interviews, observation of the learning process in the classroom, and analysis of curriculum documents and teaching tools, such as teaching modules and assessment instruments. The data obtained were analysed using qualitative analysis techniques through the stages of data reduction, data presentation, and conclusion drawing. The results showed that the implementation of the curriculum was quite good in terms of planning, as demonstrated by the teachers' ability to develop teaching tools in accordance with the curriculum requirements. However, the implementation of learning and evaluation was not yet optimal. Teachers still tended to use conventional learning methods and had difficulty in implementing authentic assessment. These findings emphasised the need to improve teacher competence through continuous training so that the implementation of the curriculum could be carried out more effectively and have an impact on improving the quality of mathematics learning
Co-Authors Adi Suarman Situmorang, Adi Suarman Ellis Mardiana Panggabean Simanjuntak, Ruth M Sitepu, Ribka Zelin Margaretha Tambunan, Hardi