PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING PBL TERHADAP HASIL BELAJAR ILMU PENGETAHUAN SOSIAL KELAS IX SMP NEGERI 4 SATAP TOMPASOBARU. jpe-unima [Internet]. 2025 Oct. 23 [cited 2026 Mar. 4];5(1s):200 209. Available from: https://ejurnal.unima.ac.id/index.php/jpe-unima/article/view/8708