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Francius Sipayung
Universitas HKBP Nommensen
Education

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Eksplorasi Gajut Manik-Manik Dalam Budaya Simalungun Pada Konsep Geometri Anita Sabrina Pasaribu; Francius Sipayung; Hardi Tambunan; Ruth Mayasari Simanjuntak
Journal on Education Vol 7 No 1 (2024): Journal on Education: Volume 7 Nomor 1 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v7i1.6904

Abstract

Maths is the clearest and most unambiguous of sciences. However, for most students, mathematics is one of the most feared and difficult subjects to understand due to the lack of understanding of the concepts needed. In line with the mathematical concepts needed in learning, a teacher can relate mathematical concepts to local culture. Mathematics embedded in culture is called ethnomathematics. This research explores the concept of mathematics in Gajut Manik-manik. Gajut Manik-manik is part of the bride's outfit in Simalungun tradition which serves as a place for betel nut, areca nut, gambier, lime and tobacco. This study aims to explore the various mathematical concepts found in Gajut beads. The research method used is a qualitative method with an ethnographic approach. Data collection was done through observation, interviews, documentation, and literature study. The data collection instruments used were observation sheets, interview sheets, cameras, field notes and voice recorders. Data analysis techniques include data reduction, data presentation, and conclusion drawing. The results obtained from this study indicate that there are mathematical concepts in Gajut beads, namely the concept of tube space, circle flat and kite. Thus, it can be concluded that Gajut beads can be used as a concrete mathematics learning tool in understanding mathematical concepts.
Pengaruh Metode Pembelajaran Berbasis Masalah Terhadap Self-Efficacy dan Kemampuan Pemecahan Masalah Matematis Ditinjau dari Kemampuan Awal Matematika Siswa SMA Berliance Zamira Zebua; Francius Sipayung; Heldon Sihombing; Yunus Laia; Hardi Tambunan
Journal on Education Vol 7 No 2 (2025): Journal on Education: Volume 7 Nomor 2 Tahun 2025 In Progress (Januari-Februari 2
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v7i2.8324

Abstract

This study aims to investigate the ability of self-efficacy and improvement of students' mathematical problem-solving ability through learning by using PBL methods. This study uses quasi experimental methods with final test control design for mathematical self-efficacy and pre-test posttest for mathematical problem-solving ability in terms of students' early math skills. The sample of this research is the students of class X in SMAS Pembda 1 Gunungsitoli and SMAS Pembda 2 Gunungsitoli in odd semester of academic year 2024/2025 as many as 96 students. The result of this researh are (1) There is an improvement of mathematical problem-solving ability of students who are treated with PBL methods is better than students who get conventional learning; (2) There is an interaction between learning method and early math ability (KAM) to improving students mathematical problem-solving ability; (3) There is an improvement of mathematical problem-solving ability in students with high KAM; (4) There is no improvement of mathematical problem-solving ability in students with low KAM; (5) self-efficacy of students who are treated with PBL methods is better than students who get conventional learning; (6) There is an interaction between learning method and early math ability (KAM) to self-efficacy of students; (7) There is different self-efficacy in students with high KAM; (8) There is no different of self-efficacy in students with low KAM.
Co-Authors Anita Sabrina Pasaribu Berliance Zamira Zebua Hardi Tambunan Heldon Sihombing Ruth Mayasari Simanjuntak Yunus Laia