Muttaqin A. Application Of Problem Based Learning (PBL) Model To Increase Students ’ Learning Motivation In The Material of Life Diversity Class X SMA Muhammadiyah 1 Gresik. icls [Internet]. 2023 Oct. 11 [cited 2025 Jun. 7];1(1):24-31. Available from: https://journal.umg.ac.id/index.php/icls/article/view/6499