This course equips students with knowledge of learning number concepts in elementary school, including number operations, place value, FPB, LCM and fractions, learning geometry and measurement, as well as learning data processing in elementary school, which is based on ethnomathematics and with a contextual and PMRI approach. The group project-based learning process includes activities that explore the cultural context related to mathematics learning concepts, both individually and in groups, as well as designing ethnomathematics-based learning using the PMRI approach and its simulations. Evaluation of learning outcomes includes mid-semester exams, final semester exams, independent assignments, group assignments and class activities.