1.
Umar N, Ristiana E, Babo R. The Effect of Problem-Based Learning on Concept Mastery and Scientific Attitudes of Fifth Grade Students. edumaspul [Internet]. 1Oct.2023 [cited 21Nov.2024];7(2):2762-2765. Available from: https://ummaspul.e-journal.id/maspuljr/article/view/5908