Fatimah, Luluk, and Abdul Shofi. “Aktivitas Siswa SMP Dalam Proses Pembelajaran Kooperatif Pada Mata Pelajaran Matematika”. Indonesian Journal of Mathematics and Natural Science Education 1, no. 1 (December 31, 2019): 19–26. Accessed December 21, 2025. https://mass.uinkhas.ac.id/index.php/mass/article/view/4.