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All Journal Didaktik : Jurnal Ilmiah PGSD STKIP Subang
Lisna Susilawati
STKIP Purwakarta
Education

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DAMPAK REALISTIC MATHEMATICS EDUCATION TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS MATERI BANGUN DATAR KELAS V DI SDN LEBAKMUNCANG 1 Lisna Susilawati; Rayi Siti Fitriani; Syarif Hendriana
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 03 (2026): Volume 12 No. 03, September 2026 Published
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i03.18045

Abstract

This study aims to analyze the impact of implementing the Realistic Mathematics Education (RME) approach on elementary school fifth-grade students' mathematical problem-solving skills in geometry concepts. The research employed a quantitative quasi-experimental method with a Nonequivalent Control Group Design. The population comprised all fifth-grade students at SDN Lebakmuncang 1. Using a purposive sampling technique, the sample consisted of class V A (25 students) as the experimental group and class V B (25 students) as the control group. The experimental group received instruction using the RME model, whereas the control group was taught using the Contextual Teaching and Learning (CTL) model. Data were collected using a 20-item essay test measuring Polya's four problem-solving indicators, supplemented by observation and documentation. Instrument testing included validity, KR-20 reliability, difficulty level, and discrimination power analyses. Pretest and posttest data were analyzed descriptively and inferentially using prerequisite tests (Shapiro-Wilk normality and Levene's homogeneity) and hypothesis tests (Independent Samples t-Test or Mann-Whitney U-Test). Intervention effectiveness was calculated through N-Gain and Effect Size analyses using Cohen's d. The findings are expected to provide empirical evidence regarding the effectiveness of the RME approach in improving mathematical problem-solving ability in elementary geometry education.
Co-Authors Rayi Siti Fitriani Syarif Hendriana