Syifaiyah, R., Tukiran, T. and Erman, E. 2018. DEVELOPMENT OF CHEMISTRY INSTRUCTION MATERIAL USING PROBLEM BASED LEARNING MODEL FOR INCREASING THE STUDENT OF SENIOR HIGH SCHOOL LEARNING ACHIEVEMENT. JPPS (Jurnal Penelitian Pendidikan Sains). 7, 2 (Jun. 2018), 1479–1486. DOI:https://doi.org/10.26740/jpps.v7n2.p1479-1486.