SUMADI, Heri. Implementation of the Problem-Based Learning Model to Enhance Critical Thinking Skills of Elementary School Students: A Literature Review. Proceedings Series on Social Sciences & Humanities, [S. l.], v. 25, p. 627–631, 2025. Disponível em: https://conferenceproceedings.ump.ac.id/pssh/article/view/1762. Acesso em: 3 mar. 2026.