Pengembangan Perangkat Pembelajaranan Berbasis Kontekstual Untuk Meningkatkan Pemahaman Rumus Bangun Datar Sederhana Siswa Kelas V SDN Bader 02

Abstract

This research is intended to find out how how the development of contextual-based learning tools to improve the understanding of the simple flat-build formula of fifth grade students of Bader 02 Elementary School. The development of the learning tool takes into account the validity, practicality, and effectiveness of the product. The type of research used is the type of research and development. This development research uses the development procedure of Borg and Gall. Data collection techniques used are non-systematic observation, interviews, expert validation questionnaires and student understanding tests. Data analysis techniques used descriptive data analysis. The results of this research are the development of contextual-based learning tools that can improve the understanding of simple flat-build formulas of fifth grade students of Bader 02 Elementary School, Madiun District, Academic Year 2021/2022. This is due to the validity of the learning device through the results of the validation questionnaire of the feasibility experts, which are 91.85, linguistic 90.05, presentation 91.2, graphics 87. The practicality of the product based on the results of interviews with mathematics teachers and fifth grade students resulted in positive responses, interesting products related to real life, feasible. Effectiveness based on observation results is a positive change in teacher activity, activeness of student attitudes, and percentage of students' comprehension test results get an average score of 86 out of 19 students exceeding the KKM 75. Categorized 79% of very capable students, 21% of students are able to study mathematics.