The Development of Geometrical Learning Devices Based on Rumah Gadang Ethnomathematics for Grade VII Junior High School

Abstract

Based on the observations, interviews and preliminary analysis conducted in several schools, it showed that the learning devices used so far have not been linked to the culture around the students. Besides, the students' learning outcomes were also still low. This was caused by (1) the learning resources that were still general in nature and not yet associated with the students' daily lives, (2) the student worksheet (LKPD) used so far did not contain sufficient activities for learning mathematics, (3) the LKPD contained problems that were difficult for the students to imagine, and (4) the activities in the lesson plan did not show the activities that lead the students to be active and can find their own mathematical concepts. Based on these problems, the researcher developed the Rumah Gadang ethnomathemic-based geometrical learning devices in form of lesson plan (RPP) and LKPD. This study was a research and development conducted with the Plomp development model. The result of the study show that RPP and LKP was valid and practical.