Development of Materials to Improve the Ability of Resolution and Disposition Mathematic Through Mathematical Approach Realistic in Class V Sd Negeri Lamsayeun Aceh Besar

Abstract

This study aims to determine: (1) validity, practicality and effectiveness of teaching materials developed through realistic mathematical approach to improve problem solving skills and mathematical disposition (2) improvement of problem solving and mathematical disposition by using teaching materials developed through mathematical approach Realistic. This type of research is development research using 4-D development model (define, design, develop, disseminate). Subjects in this study were all students of grade V at SD Negeri Lamsayeun Aceh Besar. And Objects in this study is the feasibility of teaching materials that are done to improve problem solving skills and mathematical dispositions. For the feasibility of the teaching material is viewed in terms of validity, practicality, and effectiveness. Data were collected using 3 types of instruments: assessment sheets, questionnaires, test methods. The teaching materials that have been validated by the ahi show that the revised textbooks have been valid and can be used in the learning process. The result of the learning material material is 92.75%, the linguist shows the value of 98.25%, the media expert shows the value of 97.50% and the teacher validation shows that 90%. The result of LKS validation shows that the learning material expert is 95.50%, the linguist shows the value of 92.75%, the media expert shows the value of 93.75% and the validation of the teacher shows the value of 85% .The effectiveness of teaching materials based on realistic approach in improving the ability Problem solving and mathematical disposition has been effectively used in mathematics learning, which includes: a. 85% of students who took the problem solving test obtained a minimum score of 75. b. Achieving the ideal percentage of student activity time. C. Achievement of the ability of teachers in managing learning has been good. D. At least 80% of the many subjects studied provide a positive response to the composition of learning devices based on a realistic mathematical approach developed. Problem-solving abilities and mathematical dispositions in students taught by using teaching materials through realistic mathematical approaches have increased. Student responses to the components of learning materials and learning activities are positive

Keywords: Teaching Materials, Problem Solving Abilities, Mathematical Disposition, and Realistic Mathematical Approach