Hamani, Nadhia Al, and Siti Nurul Hidayati. 2021. “VALIDITY OF STUDENT WORKSHEET BASED ON ROLE PLAYING IN HUMAN EXCRETORY SYSTEM MATERIAL TO IMPROVE MOTIVATION AND LEARNING OUTCOMES”. PENSA E-JURNAL: PENDIDIKAN SAINS 9 (1):90-95. https://doi.org/10.26740/pensa.v9i1.38507.