Derliani, Rinaldi Caniago, and Muhammad Iqbal Nasution. 2024. “Implementation of Problem Based Learning Model to Improve Students’ Understanding and Critical Thinking in Islamic Learning at SD Negeri 084082 Sibolga”. Jurnal Profesi Guru Indonesia 1 (1):51-59. https://journal.mgedukasia.or.id/index.php/jpgi/article/view/325.