PENGEMBANGAN BAHAN AJAR MATERI BILANGAN BULAT BERBASIS PENDEKATAN MATEMATIKA REALISTIK TERHADAP PEMECAHAN MASALAH MATEMATIKA SISWA KELAS VII SMP ABDI MARYKE

Abstract

This study aims to determine the development process of teaching materials on integer topics based on the Realistic Mathematics Education (RME) approach to improve students’ mathematical problem-solving skills that are valid, practical, and effective for seventh-grade students at SMP Abdi Maryke. This research employs the Research and Development (R&D) method using the ADDIE model, which consists of several stages: Analysis, Design, Development, Implementation, and Evaluation. The product developed is a set of student worksheets (LKPD) on integer material based on the RME approach to enhance mathematical problem-solving skills. The subjects of the trial were 30 seventh-grade students of SMP Abdi Maryke. The validation results showed that the average score from material experts was 0.87, categorized as very valid, and from design experts was 79.17%, categorized as valid. Based on the results of validity, practicality, and effectiveness tests, the practicality aspect obtained from students’ responses showed an average percentage of 0,90%, and from teachers’ responses 84.4%, both categorized as good. These findings indicate that the developed teaching materials can be categorized as practical. Furthermore, the effectiveness test using the N-Gain analysis showed an increase in problem-solving ability of 80.65%, categorized as effective. Therefore, the teaching material in the form of LKPD based on the Realistic Mathematics Education approach developed in this study is declared valid, practical, and effective.