DEVELOPMENT OF PROBLEM-BASED LEARNING LKPD TO IMPROVE CRITICAL THINKING ABILITY

Abstract

Students' critical thinking skills are very important in the learning process, because they can affect student learning outcomes. But today the ability to think critically is still a problem for students, especially in learning mathematics. This is because in teaching the teacher still uses conventional methods, does not involve the contextual world, and there are no teaching materials that support critical thinking skills. Therefore it is felt necessary to overcome this problem by developing Problem Based Learning Worksheets, because PBL is a learning model that involves the real world of students in learning and trains students' thinking activities. The purpose of this study is to describe how the development of LKPD and the effectiveness of PBL-based LKPD on critical thinking skills. The type of research used is (R&D) with the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). Data analysis through expert judgment, and paired sample T test to determine the effectiveness of the model. The results of the material expert's assessment showed that the LKPD that had been developed was in a very appropriate category with a score of 88%, media experts showed a very feasible category with a score of 93%. Meanwhile, learning experts show a very feasible category with a score of 93.5%. The results of the student response questionnaire obtained an average of 98.5% in the very positive category. The average pre-test score was 52.95, while the post-test average was 84.77. And the results of the N-Gain score are 0.7001 in the high category and the N-Gain percent is 0.700084 with the effective category. So, it can be concluded that the use of LKPD in class V at SDN Kradinan 02 is said to be very positive.