Al Ayubi, Sholahudin. “Improving Students Activity and Students Learning Outcomes by Using Cooperative Learning With Snowball Throwing Type”. Jurnal Axioma : Jurnal Matematika dan Pembelajaran 1, no. 2 (December 31, 2020): 122–127. Accessed April 26, 2024. https://ejurnal.uij.ac.id/index.php/AXI/article/view/273.