Pengembangan Bahan Ajar Flipbook Maker Untuk Meningkatkan Kemampuan Pemahaman Konsep Matematis Siswa

analysis, design, development, ABSTRACT The purpose of this research is to produce teaching materials in the form of flipbook makers to improve students' ability to understand mathematical concepts in the flat-sided building material for class VIII SMP/MTs even semesters. This research model is the ADDIE model which refers to 5 steps of development including: analysis, design, development, implementation and evaluation. The results of the research on teaching materials in the form of a flipbook maker assisted by Ispring Suite 8 were adjusted to the indicators of the ability to understand concepts in the flat-sided building material in class VIII SMP/MTs. The results of the validity test of these teaching materials were obtained based on data from the expert assessment questionnaires, namely 90% material experts, 93% media experts, 87% concept understanding test sheet experts and 84% student response questionnaire experts with all expert assessments reaching the very valid category. . Meanwhile, the effectiveness of teaching materials is obtained from student response questionnaire data and concept understanding ability tests. The results of the student response questionnaire were 88.3% in very positive category while the test scores for students' mathematical concept understanding abilities were t hit > t table , so H 0 was rejected. That is, the statement that the average difference between before and after the application of flipbook maker teaching materials is different. Or it can be said that there is an increase in students' ability to understand mathematical concepts after using flipbook teaching materials so that they reach the very effective category. It can be concluded that the overall teaching material in mathematics learning is in the form of a flipbook maker to improve students' understanding of mathematical concepts in the flat-sided geometry material that is suitable for use in learning mathematics.