The Effectiveness of Ethnomathematics-Based Teaching Materials to Improve Elementary School Students' Understanding of Mathematics Concepts

This study aims to test the effectiveness of ethnomathematics-based teaching materials in improving the understanding of mathematics concepts in SDN 2 Suruh, Trenggalek Regency, by integrating the local cultural context of Trenggalek Regency. The method used is quasi-experimental with a one-group pretest-posttest design. The population in this study is students of SDN 2 Suruh. The sampling technique in this study was Purposive sampling of 65 students in grade V of SDN 2 Suruh. The selection of sampling was based on the ability to understand mathematical concepts. The research instruments include a concept understanding test with data analysis using Shapiro-Wilk normality, Homogeneity, Paired Sample T-Test, and N-Gain. The data analyzed is a test of understanding of mathematical concepts. The results showed a significant difference between the pretest and posttest values (sig. 0.000 <0.05), with an average N-Gain of 58.60% which was included in the effective category. Ethnomathematics-based teaching materials have been proven to be able to increase students' understanding of mathematical concepts while fostering interest in learning through the introduction of local cultural elements. These findings recommend the use of ethnomathematics-based teaching materials as a relevant and contextual learning strategy in primary schools.