Akhir M, Siburian J, Hasibuan MHE. A Study Comparison the Application of Discovery Learning and Problem Based Learning Models on the Critical Thinking Ability. In. Sci. Ed. J [Internet]. 2023Jun.8 [cited 2024May4];4(2):84-9. Available from: https://cahaya-ic.com/index.php/ISEJ/article/view/390