Waskita NDHI, Setiawan B, Mahdiannur MA. Problem-based learning model implementation to improve students problem-solving skills . J. Pijar.MIPA [Internet]. 2022 Jul. 28 [cited 2024 Nov. 24];17(4):455-61. Available from: http://jurnalfkip.unram.ac.id/index.php/JPM/article/view/3625