Cinthia, D. et al. 2025. Evaluating the Effectiveness of Problem-Based Learning (PBL) in Schools: A Comprehensive Meta-Analysis. AL-ISHLAH: Jurnal Pendidikan. 17, 3 (Oct. 2025), 5683–5695. DOI:https://doi.org/10.35445/alishlah.v17i3.7008.