Development of mathematics learning with that quiz evaluation media to improve creative thinking abilities and students self concept

Creative thinking ability is one of the skills needed in 21st-century learning and self-concept is the core of personality which is the most important aspect of whether or not individuals develop a personality. Students in Indonesia still have not developed the realm of creative thinking when working on practice questions. The purpose of this study was to obtain valid, practical, and effective mathematics learning tools with the help of evaluation media that quiz on circle material to improve students’ creative thinking ability and self-concept. The participant in this study were students of Junior High School grade VIII in the year 2019/2020. This research is the development of research with the 4D Thiagarajan model, which is adapted into 3D, namely defining, designing, and developing. The tools developed are the syllabus, lesson plan, student’s worksheet, and student books. The data collection technique used the test and questionnaire method. The results showed that using the 3-D development model produced the learning device has gone through a validation process and is declared to meet the content validity and construct validity set by experts in the field and is declared valid, practical, and effective shown from the results to get an average value of 3.6 with very good criteria. Based on the results of the learning media development design can improve students’ creative thinking abilities from the results of the pretest and posttest values getting an average N-gain of 0.9 and self-concept getting an average 0,7 that happened was in the high category. This is evidenced by the significance value of the two-sample paired t-test results between the pretest and posttest data on creative thinking abilities in the experimental class 0.00<0.05. That is, there is a significant difference in increasing creative thinking abilities.