Pengembangan Bahan Ajar dengan Penguatan Karakter pada Materi Bangun Ruang untuk Sekolah Dasar

The purpose of this study to produce learning materials based character building. Character building refers to the PPK where there are five main character that come from Pancasila, namely religion, nationalism, integrity, independence and mutual cooperation. At the elementary education level, the portion of character building provided is greater than knowledge. This underlies researchers to develop learning materials based on character building. Learning materials contain material with strengthening character building, and student activity columns that aim to explore knowledge by inserting strengthening character education and question exercises This is a development research. The development procedure refers to the ADDIE development model (Analyze, Design, Develop, Implementation and Evaluation). The research begins with Analyze, which is needs analysis through observation and interviews, then design is designing teaching materials. The next stage is develope, which is developing with validation to experts, then followed by the implementation stage, namely by implementing trials of teaching materials to students with the teacher. The last step is evaluation, namely conducting an evaluation after the implementation of teaching materials. Instruments in the form of expert validation sheets (material and media experts), test questions and student interview sheets. The results of the validation of the teaching materials developed show that the category is feasible in terms of validity, practicality, and effectiveness. &nbsp