Problem-Based Learning in Digital Learning Environments: A Systematic Literature Review Supporting SDG 4. Journal of Current Studies in SDGs, [S. l.], v. 2, n. 1, 2026. DOI: 10.63230/jocsis.2.1.133. Disponível em: https://journal.i-ros.org/index.php/JOCSIS/article/view/133. Acesso em: 6 may. 2026.