NASUTION, Nurul Rafiqah; WAHYUDIN, Wahyudin; NURLAELAH, Elah. Efforts to Improve Students’ Learning Outcomes Through Collaborative Learning: The Topic of Quadrilaterals. Mathline : Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 8, n. 3, p. 1239–1258, 2023. DOI: 10.31943/mathline.v8i3.483. Disponível em: https://mathline.unwir.ac.id/index.php/Mathline/article/view/483. Acesso em: 24 dec. 2025.