AMALIA, S.; SUPRIADI, S.; ARISETYAWAN, A. Problem-Based Learning with Pop-Up Books to Boost Mathematical Critical Thinking in 6th Grade Geometry: Systematic Literature Review. Journal of Innovation and Research in Primary Education, [S. l.], v. 4, n. 4, p. 3682–3698, 2025. DOI: 10.56916/jirpe.v4i4.2471. Disponível em: https://ejournal.papanda.org/index.php/jirpe/article/view/2471. Acesso em: 21 jan. 2026.