“PROBLEM-BASED LEARNING (PBL) BASED E-WORKSHEETS ON DIGESTIVE SYSTEM MATERIAL TO IMPROVE JUNIOR HIGH SCHOOL STUDENTS’ CRITICAL THINKING SKILLS”, JPP, vol. 13, no. 3, pp. 157–162, Sep. 2025, Accessed: Mar. 28, 2026. [Online]. Available: https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/70684