PENINGKATAN HASIL BELAJAR EKONOMI MELALUI METODE PROBLEM BASED LEARNING PBL SISWA KELAS XI DI SMA KATOLIK ATMAJAYA TOLITOLI. jpe-unima [Internet]. 2025 Oct. 23 [cited 2026 Mar. 4];5(1s):170 175. Available from: https://ejurnal.unima.ac.id/index.php/jpe-unima/article/view/8703