META ANALISIS EFEKTIFITAS PROBLEM BASED LEARNING DAN PROBLEM SOLVING DITINJAU DARI KEMAMPUAN BERPIKIR KRITIS SISWA SEKOLAH DASAR. JGK [Internet]. 2021 Mar. 19 [cited 2026 Mar. 20];5(2):21-32. Available from: https://jurnal.unimed.ac.id/2012/index.php/jgkp/article/view/23901