Pengembangan Media Puzzle Bangun Datar sebagai Alternatif Pembelajaran Geometri di Sekolah Dasar

This study aims to develop valid, practical, and effective Flat Shape Puzzle media as a learning medium for elementary school students in Phase B. As well as to help elementary school students in understanding the abstract form of flat shapes to be presented with the concept of concrete objects. Flat Shape Puzzle Media is made to motivate students to study hard, especially in mathematics learning. This type of research is Research and Development (R & D) using the ADDIE development model through five stages, namely Analysis, Design, Development, Implementation, and Evaluation. The subjects were 24 fourth grade students from SD Negeri 3 Banyumanis. Meanwhile, the data collection method uses observation, interviews, tests, and questionnaires. The Flat Building Puzzle Media was validated by validators from the Mathematics Education Lecturer of FKIP UKSW and teachers of SD Negeri 3 Banyumanis. It has been mentioned that the Flat Building Puzzle media with a percentage of 86% is very valid and very practical with a percentage of 93%. This media was implemented and the results of the Wilcoxon statistical test with a level of produced a significant value of 0.000, which concluded that the Flat Building Puzzle media was very effective as a learning tool for students in flat building material.