Development of Learning Materials with Realistic Mathematics Education Approach to Improve Students’ Mathematic Reasoning Ability and Self-Concept

Abstract

This study aimed to describe; 1) The validity, effectiveness, and practicality of learning materials with Realistic Mathematics Education; 2) Improvement of students’ mathematics reasoning ability and student self-concept. This research is development research using the development model of Thiagarajan 4-D model. Learning materials that have met valid criteria according to experts, were tested in class VIII of SMP Muhammadiyah-22 Kisaran. From the results of trial I, trial II and disseminate stage were obtained : 1) the validity of learning materials that have met valid criteria according to experts; the effectiveness criteria are reviewed from: a) completeness of learning classical students; b) ideal time; c) positive responses of students to learning materials developed; and the practicality criteria based on the results of observations on the implementation of learning materials are included in the good category. 2) improvement of mathematical reasoning ability and self-concept of students using learning tools developed in terms of : a) The N-Gain score of the test of students' mathematical reasoning ability has increased, namely in the trial I was 75.78 increased to 86.91 in trial II and increased to 88.28 in the disseminate stage; b)  Results of the average self-concept questionnaire in the trial I was 73.63, increasing to 78.2 in the trial II and increased to 80.07 in the disseminate stage.

Keywords: RME, mathematic reasoning ability, self-concept

DOI: 10.7176/JEP/10-23-10

Publication date: August 31^st 2019