Sriwijayati A, Rahma Febriyanti, M. Ulul Albab. Pengaruh Model Pembelajaran Berbasis Masalah terhadap Kemampuan Berpikir Kritis Siswa SMP Materi Sistem Persamaan Linear Dua Variabel: The Effect of Problem-Based Learning Model on the Critical Thinking Ability of Junior High School Students Two-Variable Linear Equation System Material. Discovery [Internet]. 2024 Nov. 5 [cited 2025 Mar. 10];9(2):122-30. Available from: https://ejournal.unhasy.ac.id/index.php/discovery/article/view/7088