Ratu AK, Bano VO, Ndjoeroemana Y. Application of the Problem Based Instruction (PBI) Learning Model to Improve Student Learning Outcomes at SMA N 1 Nggoa. FJMR [Internet]. 2023 May 30 [cited 2026 May 22];2(5):847-58. Available from: https://journal.formosapublisher.org/index.php/fjmr/article/view/4123