The Influence Of The Problem Based Learning (PBL) Learning Model On Learning Motivation At SMP Swasta Muhammadiyah 55 Kandangan. Nagur [Internet]. 2023 Nov. 29 [cited 2025 Apr. 18];1(2):12-29. Available from: https://jurnal.usi.ac.id/index.php/nagur/article/view/1210