Mariana. “Implementation of Problem-Based Learning Model to Improve Student Learning Outcomes in Understanding Zakat at SDN 26 Leupung ”. Jurnal Profesi Guru Indonesia 1, no. 2 (June 30, 2024): 264–275. Accessed October 23, 2025. https://journal.mgedukasia.or.id/index.php/jpgi/article/view/694.