Umar, Nurwahidah, Evi Ristiana, and Rosleny Babo. “The Effect of Problem-Based Learning on Concept Mastery and Scientific Attitudes of Fifth Grade Students”. Edumaspul: Jurnal Pendidikan 7, no. 2 (October 1, 2023): 2762- 2765. Accessed December 9, 2025. https://jurnal.unimen.cloud/maspuljr/article/view/5908.