Meriza D, Hiltrimartin C, Hartono Y. Development of Problem Based Differentiated Learning Comparison Materials in Junior High School. j. pend. mat. [Internet]. 2024 Sep. 4 [cited 2024 Oct. 5];18(3):447-68. Available from: https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/49