Yuliasandra EW, Wulandari F. The Influence of Problem Based Learning Model on the Critical Thinking Elementary School . jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Aug. 25 [cited 2024 Nov. 24];9(8):6610-8. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/3766