Putri, P. D., Tukiran, T., & Nasrudin, H. (2018). THE EFFECTIVENESS OF PROBLEM-BASED LEARNING (PBL) MODELS BASED ON SOCIO-SCIENTIFIC ISSUES (SSI) TO IMPROVE THE ABILITY OF SCIENCE LITERACY ON CLIMATE CHANGE MATERIALS. JPPS (Jurnal Penelitian Pendidikan Sains), 7(2), 1519–1524. https://doi.org/10.26740/jpps.v7n2.p1519-1524