Arianto, Yuli Asi, and Abd Rahman. “Improving Students Activity and Students Learning Outcomes by Using Cooperative Learning With Trade a Problem Type”. Jurnal Axioma : Jurnal Matematika dan Pembelajaran 1, no. 2 (December 31, 2020): 105–121. Accessed May 4, 2024. https://ejurnal.uij.ac.id/index.php/AXI/article/view/272.