Development of Ethnomathematics-Based E-LKPD on Cube and Block Spaces for Elementary School Students

Abstract

The low understanding of mathematical concepts of cube and block building materials is caused by the lack of utilization of interactive media and related examples of culture-based learning problems such as traditional cake food. Therefore, this study aims to determine the feasibility, practicality, and effectiveness of ethnomathematics-based E-LKPD on cube and block building materials for elementary school students. The type of research used is development research (Research and Development) which refers to the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). The research instruments include expert validation (material, language, LKPD), teachers, and effectiveness test using N-Gain. The novelty of this research is to develop ethnomathematics-based E-LKPDs that focus on the introduction of traditional cakes, namely jadah cakes resembling cube spaces and getuk cakes resembling beam spaces. Data were obtained through questionnaires, observations, interviews, documentation, and tests, then analyzed qualitatively and quantitatively. The validation results showed that the developed E-LKPD obtained an average score of 80% material experts (feasible), 97% media experts (very valid), and 89% language experts (very valid). The teacher's questionnaire showed a practicality of 100%, while the effectiveness test reached 75% which was classified as quite effective. Thus, the ethnomathematics-based E-LKPD is declared feasible, practical, and effective enough to be used in learning mathematics cube and beam material in elementary schools.