Pengembangan Media Pembelajaran Ensiklopedia IPA Berbasis Pendekatan Contextual Teaching & Learning (CTL) pada Materi Energi dan Perubahannya untuk Siswa Kelas III Sekolah Dasar

This research is a development that aims to produce learning media products in the form of science encyclopedia book based on Contextual Teaching & Learning (CTL) energy material and its changes for third grade elementary school students determine quality aspects validity feasibility aspects. refers 4D model (Define, Design, Development, Disseminate). The population subjects this study were at SD Negeri Sukasari 7, Tangerang City. instruments used measure developed aspect assessment sheet by experts experts, classroom teacher, student response questionnaires. an average score 3.95 which indicates "valid" with good criteria, who get 4.00 4.15 class teachers 4.26 "very feasible" be used, questionnaires, 4.6 obtained small-scale trials 4.7 large-scale show has students.