Purba, Agnes Lucyana, and Mangaratua Marianus Simanjorang. “Application of the Jigsaw Cooperative Learning Model to Improve the Mathematical Problem Solving Ability of Class VIII-3 Students of SMP Negeri 5 Pematang Siantar Academic Year 2022/2023”. Asian Journal of Applied Education (AJAE) 2, no. 1 (January 30, 2023): 17–26. Accessed September 19, 2024. https://journal.formosapublisher.org/index.php/ajae/article/view/2620.