Firdaus MH, Tegeh IM. E-Module Using a Problem Based Learning Approach in Social and Science Learning of Fourth Grade Elementary Schools. j. lesson learning stud. [Internet]. 2024 Aug. 22 [cited 2024 Dec. 20];7(2):356-65. Available from: https://ejournal.undiksha.ac.id./index.php/JLLS/article/view/81617