Purba, Agnes Lucyana, and Mangaratua Marianus Simanjorang. 2023. “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 (1):17-26. https://doi.org/10.55927/ajae.v2i1.2620.