The Influence Of The Problem Based Learning (PBL) Learning Model On Learning Motivation At SMP Swasta Muhammadiyah 55 Kandangan. Nagur [Internet]. 29 November 2023 [dikutip 4 November 2025];1(2):12-29. Tersedia pada: https://jurnal.usi.ac.id/index.php/nagur/article/view/1210