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This study aims to: 1) analyzing the effectiveness of learning materials that developed through realistic mathematics education with Malay culture context (RME-MCC); 2) analyzing the improvement of students mathematical communication ability by using learning materials that developed through RME-MCC; 3) analyzing the attainment of self-efficacy students by using learning materials that developed through RME-MCC. This research is a development research conducted in two stages, namely the first stage of developing learning materials through RME-MCC using a development model 4-D, and the second stage testing the learning materials through RME-MCC developed in classes VII-1 and VII-2 SMPN 2 Talawi. Learning materials generated from this study are: lesson plans, teacher books, student books, worksheet, and mathematical communication ability tests. From the results of trial I and trial II, it was obtained: 1) the learning materials through RME-MCC met the valid and effective criteria; 2) there is an increase in students mathematical communication ability by using learning materials through RME-MCC, in the trial I obtained an average score of pretest 53,13% and a score of posttest 68,75%, and in the trial II with an average score pretest 65,63% and score posttest 87,50%; 3) the attainment of self-efficacy of students taught using learning materials through RME-MCC in the trial I obtained an average of 81,34% and in the trial II 86,59%. Based on the results of the study it was suggested that mathematics teachers seek mathematics learning using learning approaches and learning materials that integrate local culture in mathematics learning.

american journal of educational research

Developing Learning Materials Based on Realistic Mathematics Education with Malay Culture Context to Improve Mathematical Communication Ability and Self-Efficacy of Students in SMPN 2 Talawi