PENGOPTIMALAN HASIL BELAJAR IPS DAN KETERLIBATAN SISWA KELAS VII MELALUI PENDEKATAN PEMBELAJARAN PROBLEM BASED LEARNING DI SMP NEGERI 2 PANGSID. jpe-unima [Internet]. 2025 Oct. 23 [cited 2026 Mar. 25];4(1s):84 90. Available from: https://ejurnal.unima.ac.id/index.php/jpe-unima/article/view/8156