Rahmawati A, Kurniawati D, Gazali F. Implementation of Problem-Based Learning to Enhance Students’ Critical-Thinking Activities in Chemistry Learning: A Classroom Action Research at SMAN 1 Pancung Soal. SEARCH [Internet]. 2026 Aug. 27 [cited 2026 Aug. 30];5(1):108-17. Available from: https://e-jurnal.iainsorong.ac.id/index.php/jaser/article/view/3281