Pengembangan LKPD berbantuan GeoGebra pada materi SPtLDV untuk memfasilitasi kemampuan representasi matematis siswa

Abstract

This study was motivated by the importance of mathematical representation ability in mathematics learning and the limited availability of learning media aligned with the Merdeka Curriculum. Interviews with a mathematics teacher at SMA Negeri 6 Mandau indicated that students had difficulty presenting data through images, graphs, or tables and using mathematical symbols and language to solve problems. This study aimed to develop GeoGebra-assisted student worksheets on systems of linear inequalities in two variables to facilitate the mathematical representation ability of Grade X senior high school students. The study employed a research-and-development approach using the 4-D model: define, design, develop, and disseminate. Data were collected using validation sheets completed by three expert validators and response questionnaires administered to 12 Grade X students with heterogeneous abilities. The validation produced a mean score of 3.68, categorized as highly valid, while the student-response questionnaire yielded a mean score of 3.50, categorized as highly practical. The final product was compiled as a student worksheet book. These findings indicate that GeoGebra-assisted worksheets can provide a technology-based alternative for supporting conceptual understanding and mathematical representation, although their effectiveness requires further testing with larger and more diverse samples.