Nasution, Nurul Rafiqah, Wahyudin Wahyudin, and Elah Nurlaelah. “Efforts to Improve Students’ Learning Outcomes Through Collaborative Learning: The Topic of Quadrilaterals”. Mathline : Jurnal Matematika dan Pendidikan Matematika 8, no. 3 (August 29, 2023): 1239–1258. Accessed March 10, 2025. https://mathline.unwir.ac.id/index.php/Mathline/article/view/483.