Pengembangan Lembar Kegiatan Peserta Didik (LKPD) Berbasis Socio Scientific I…

The development of SSI-based student’s activity sheet on the petroleum aims to develop valid open materials and determine user responses in learning. The Research uses research and development (R&D) methods with a 4-D development models which includes Define, Design, Develop and Disseminate, because of the limited time of this research was only carried out until the Develop stage followe…