Müller, K., Weber, A. and Berger, M. 2025. 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. 2, 5 (Oct. 2025), 302–313. DOI:https://doi.org/10.70177/ijeep.v2i5.3082.