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All Journal Journal of Mathematics Education and Application (JMEA) Edu Riligia: Jurnal Ilmu Pendidikan Islam dan Keagamaan EDU RILIGIA: Journal of Islamic and Religious Education
Zenfiqa Aditya Ramadhani Br Sitepu
Universitas Muhammadiyah Sumatera Utara
Religion Humanities Education Mathematics Social Sciences Other

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The Role of the TIMPERSARI Teaching Aid in Enhancing Students’ Mathematical Problem-Solving Skills in One-Variable Linear Equations Zenfiqa Aditya Ramadhani Br Sitepu; Irvan Irvan; Tua Halomoan Harahap
JMEA : Journal of Mathematics Education and Application Vol 4, No 2 (2025): Juni
Publisher : JMEA : Journal of Mathematics Education and Application

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmea.v4i2.20559

Abstract

This study aims to examine the role of the TIMPERSARI (Linear Equation Balance Scale) teaching aid in improving students' mathematical problem-solving abilities on the topic of One-Variable Linear Equations (PLSV). The background of the study stems from the low level of basic algebraic concept understanding and the limited use of concrete media in junior high school mathematics learning. This research employed a descriptive qualitative approach with data collection techniques including classroom observation, student worksheets, student reflections, teacher interviews, and documentation. The results indicated that the use of the TIMPERSARI tool significantly enhanced students’ conceptual understanding of equivalence, encouraged more systematic problem-solving strategies, and fostered students’ affective and collaborative engagement. Additionally, students' reflections and teacher interviews revealed positive responses to the media implementation, both in terms of conceptual understanding and learning motivation. This study concludes that TIMPERSARI is effective in bridging abstract concepts into meaningful, concrete experiences and is a viable innovative alternative in junior high school mathematics education.
Development of Differentiated E-Student Worksheets Based on Realistic Mathematics Education to Enhance Students' Mathematical Problem-Solving Skills and Self-Efficacy Regarding Linear Equations with One Variable Zenfiqa Aditya Ramadhani Br Sitepu; Irvan Irvan; Tua Halomoan Harahap
EDU-RILIGIA: Jurnal Ilmu Pendidikan Islam dan Keagamaan Vol 10, No 3 (2026): Juli - September (In Press)
Publisher : Pascasarjana Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/er.v10i3.31482

Abstract

This research was motivated by the suboptimal use of digital teaching materials that can accommodate the diverse characteristics of students, as well as students’ low mathematical problem-solving skills and self-efficacy in learning One-Variable Linear Equations (OVLE). This study aimed to develop a differentiated Electronic Student Worksheet (E-LKPD) based on Realistic Mathematics Education (RME) and to analyze its validity, practicality, and effectiveness in improving students’ mathematical problem-solving skills and self-efficacy. The study employed a Research and Development (R&D) method using the ADDIE model, which consists of analysis, design, development, implementation, and evaluation. The trial subjects consisted of 90 students and 3 teachers in the needs analysis stage, 1 teacher in the individual trial, 9 students in the small-group trial, and 30 seventh-grade students from Class VII-C in the field trial at SMP IT Darur Rasyid. Data were collected through expert validation, questionnaires, observations, and pretest-posttest assessments. The results showed that the validity of the E-LKPD reached 77.5% according to the material expert and 92.5% according to the design expert. The practicality of the product reached 87.5% in the individual trial and 80% in both the small-group and field trials. The effectiveness analysis based on the N-Gain scores indicated an improvement of 85.6% in students’ mathematical problem-solving skills and 83.3% in self-efficacy, both of which were categorized as effective. Therefore, the differentiated E-LKPD based on RME was declared valid, practical, and effective for use in learning One-Variable Linear Equations.
Development of Differentiated E-Student Worksheets Based on Realistic Mathematics Education to Enhance Students' Mathematical Problem-Solving Skills and Self-Efficacy Regarding Linear Equations with One Variable Zenfiqa Aditya Ramadhani Br Sitepu; Irvan Irvan; Tua Halomoan Harahap
EDU-RILIGIA: Jurnal Ilmu Pendidikan Islam dan Keagamaan Vol 10, No 3 (2026): Juli - September (In Press)
Publisher : Pascasarjana Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/er.v10i3.31482

Abstract

This research was motivated by the suboptimal use of digital teaching materials that can accommodate the diverse characteristics of students, as well as students’ low mathematical problem-solving skills and self-efficacy in learning One-Variable Linear Equations (OVLE). This study aimed to develop a differentiated Electronic Student Worksheet (E-LKPD) based on Realistic Mathematics Education (RME) and to analyze its validity, practicality, and effectiveness in improving students’ mathematical problem-solving skills and self-efficacy. The study employed a Research and Development (R&D) method using the ADDIE model, which consists of analysis, design, development, implementation, and evaluation. The trial subjects consisted of 90 students and 3 teachers in the needs analysis stage, 1 teacher in the individual trial, 9 students in the small-group trial, and 30 seventh-grade students from Class VII-C in the field trial at SMP IT Darur Rasyid. Data were collected through expert validation, questionnaires, observations, and pretest-posttest assessments. The results showed that the validity of the E-LKPD reached 77.5% according to the material expert and 92.5% according to the design expert. The practicality of the product reached 87.5% in the individual trial and 80% in both the small-group and field trials. The effectiveness analysis based on the N-Gain scores indicated an improvement of 85.6% in students’ mathematical problem-solving skills and 83.3% in self-efficacy, both of which were categorized as effective. Therefore, the differentiated E-LKPD based on RME was declared valid, practical, and effective for use in learning One-Variable Linear Equations.
Co-Authors Irvan Irvan Irvan, Irvan Tua Halomoan Harahap Tua Halomoan Harahap