Suyanti. “Improving Learning Outcomes Theme VII Sub Theme 1 Using the Problem-Based Learning Model for Fifth Grade Students at SD Negeri 2 Samigaluh, Kulon Progo Regency, Academic Year 2021/2022”. IJCER (International Journal of Chemistry Education Research) 7, no. 2 (October 25, 2023): 89–92. Accessed November 23, 2024. https://journal.uii.ac.id/IJCER/article/view/30452.