“Penerapan Model Problem Based Learning Dan Model Project Based Learning Terhadap Hasil Belajar Siswa”. Science and Physics Education Journal (SPEJ) 2, no. 2 (June 30, 2019): 42–51. Accessed June 12, 2026. http://www.journal.ipm2kpe.or.id/index.php/SPEJ/article/view/643.