Development of the Ethnomathematics-Based Mathematics Teaching Materials to Improve Conceptual Understanding of Madrasah Ibtidaiyah Students in Lombok, Indonesia

Mathematics learning requires real situations that students often face. Using the context around students can make mathematics learning easy for students to understand. This research aims to develop ethnomathematics-based mathematics teaching materials to improve the conceptual understanding of Madrasah Ibtidaiyah/Islamic elementary school students in Lombok, Indonesia, that are feasible and practical. This research is research and development with the development of a 4D model consisting of defining, designing, developing, and disseminating. The resulting product is ethnomathematics-based mathematics teaching materials for grade IV students of Madrasah Ibtidaiyah in Lombok, Indonesia. The results of the development of teaching materials at the level of feasibility from the validation of material experts obtained a score of 39.5 with a feasible category, cultural experts obtained a score of 19.5 with a feasible category, and media experts obtained a score of 40.8 with a very feasible category. From the results of the product trial, it is known that the resulting product falls into the practical criteria, namely from student responses obtaining an assessment of 91% with a very positive category. The implications of the research are expected to increase the mathematical conceptual understanding of madrasah ibtidaiyah students to strengthen national cultural identity.