PENGARUH PEMBELAJARAN PROBLEM BASED LERANING (PROBLEM BASED LEARNING DAN PROJECT BASED LEARNING SERTA MOTIVASI BELAJAR TERHADAP PERKEMBANGAN KOGNITIF ANAK. JS [Internet]. 2025 Dec. 22 [cited 2026 Mar. 22];10(1):155-68. Available from: https://jurnal.unimed.ac.id/2012/index.php/js/article/view/67353