MÜLLER, K.; WEBER, A. .; BERGER, M. . THE EFFICACY OF PROBLEM-BASED LEARNING IN DEVELOPING ETHICAL-DECISION MAKING AND CRITICAL THINKING SKILLS IN 6TH GRADERS. International Journal of Educatio Elementaria and Psychologia, [S. l.], v. 2, n. 5, p. 302–313, 2025. DOI: 10.70177/ijeep.v2i5.3082. Disponível em: https://research.adra.ac.id/index.php/ijeep/article/view/3082. Acesso em: 22 apr. 2026.