NAENGGOLAN, Rini Siti Suleh. Implementation of Problem Based Learning (PBL) Models to Improve Student Physics Learning Outcomes. Current STEAM and Education Research, [S. l.], v. 1, n. 2, p. 71–80, 2023. DOI: 10.58797/cser.010205. Disponível em: http://mjipublisher.com/index.php/cser/article/view/74. Acesso em: 2 sep. 2025.