Leasa, Marleny, Yakub Lalyolik, John Rafafy, and Javier Julia. “Jigsaw in Teaching Circulatory System: A Learning Activity on Elementary Science Classroom ”. Biosfer: Jurnal Pendidikan Biologi 12, no. 2 (November 17, 2019): 122–134. Accessed November 22, 2024. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/12135.