“THE EFFECT OF ROLE PLAYING LEARNING MODEL ON IMPROVING STUDENT CONCEPT UNDERSTANDING ON ENVIRONMENTAL POLLUTION MATERIAL” (2017) Al ’Ilmi : Jurnal Pendidikan MIPA, 6(1). Available at: https://jurnal.radenfatah.ac.id/index.php/alilmi/article/view/2141 (Accessed: 12 May 2025).