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The purpose of this study is to develop learning materials based on realistic mathematics education approach that are valid, practical and effective to improve problem solving skills and learning independence of class VII students. This research is a development research that uses a design model for materials development according to Thiagarajan, et al. namely 4-D. This trial was carried out in classes VII-3 and VII-4 Padangsidimpuan 5 Middle School. From the results of the study, it was found that developed devices were valid with an average total validity of RPP = 4.46, student books = 4.41, teacher’s books = 4.38, LAS = 4.31; then a practical device can be implemented, with an average of 85% and 91.25%. and effective devices, in terms of a) classical learning completeness of students in 62% I test increased in trial II has reached 92%; and b) student responses to the components of positive learning. Based on the results of the study it was suggested that mathematics teachers can facilitate mathematical learning using quality learning materials and especially by using learning based realistic mathematics education approach.

Development of Learning Materials Based on Realistic Mathematics Education to Improve Problem Solving Ability and Student Learning Independence