THE ANALYSIS OF JUNIOR HIGH SCHOOL STUDENTS’ COMMUNICATION AND COLLABORATION SKILLS IMPROVEMENT USING MULTIMEDIA-BASED INTEGRATED INSTRUCTION (MBI2) IN LEARNING REFLECTION CONCEPT. (2018). Jurnal Pengajaran Matematika Dan Ilmu Pengetahuan Alam, 23(2). https://doi.org/10.18269/jpmipa.v23i2.13981