PENINGKATAN MOTIVASI BELAJAR SISWA MELALUI PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING PADA MATA PELAJARAN IPS KELAS VII SMP NEGERI 3 AMBON. jpe-unima [Internet]. 2025 Oct. 23 [cited 2026 Mar. 4];4(1s):228 236. Available from: https://ejurnal.unima.ac.id/index.php/jpe-unima/article/view/8173