2020. THE DEVELOPMENT OF E-MODULES PROBLEM BASED LEARNING USING GOOLE CLASSROOM FOR BASIC ELECTRICITY AND ELECTRONICS AT VOCATIONAL SCHOOL. Cyberspace: Jurnal Pendidikan Teknologi Informasi. 4, 2 (Oct. 2020), 84–93. DOI:https://doi.org/10.22373/cj.v4i2.7861.