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), [S. l.], v. 7, n. 2, p. 89–92, 2023. DOI: 10.20885/ijcer.vol7.iss2.art9. Disponível em: https://journal.uii.ac.id/IJCER/article/view/30452. Acesso em: 12 may. 2024.