Learning Design of Combinatory Using Indonesian Realistic Mathematics Education

This study aims to find out how the use of Indonesian realistic mathematics education approach (PMRI) can support students' understanding in learning the concept of combinatory. The research method used is Design research. Design research consists of three stages: preliminary, teaching experiment and retrospective analysis. Data collection techniques obtained through video recording, student worksheets, pre-test, post-test, field notes and interviews. The subject of the research is the students of Senior High School 15 Palembang. Data analysis techniques are done by comparing the HLT that has been designed and what happens during the learning process. The results show that PMRI with role playing context can support students' understanding in finding combinatory concept, especially permutation and combination topics.