mrizkidirmansyah, Febriandi R. Meningkatkan Kemampuan Problem Solving Matematika Siswa Sd Melalui Implementasi Model Problem Based Learning. JEE [Internet]. 2023 Dec. 30 [cited 2024 Sep. 3];6(4):2135-44. Available from: http://ejournal.unma.ac.id/index.php/jee/article/view/7591