Dian Sari, A. S., Munasir, M., & Jatmiko, B. (2018). THE PRACTICALLITY OF PO2E2W LEARNING MATERIAL MODEL ASSISTED PHET MEDIA TO IMPROVE THE STUDENTS PHYSICS PROBLEM SOLVING SKILLS. JPPS (Jurnal Penelitian Pendidikan Sains), 8(1). https://doi.org/10.26740/jpps.v8n1.p%p