Ritartini. Improving Collaborative Ability and Learning Achievement in Mathematics Through the Project-Based Learning (PjBL) Model Using Diagram Image Media for Class VI Students of SD Negeri Purwoharjo Academic Year 2021/2022. Int. J. Chem. Educ. Res. [Internet]. 2023 Oct. 25 [cited 2024 Nov. 21];7(2):76-80. Available from: https://journal.uii.ac.id/IJCER/article/view/29375