SUYONO; JUWARLAN; PRIJO HARSONO; ERWIN SUTANTYO; PUTRANTO, W. A. Critical Thinking And 21st-Century Skills: Evaluating The Effectiveness Of Problem-Based Learning Models In Multicultural Classrooms. International Journal of Educational Research Excellence (IJERE), [S. l.], v. 4, n. 2, p. 511–521, 2025. DOI: 10.55299/ijere.v4i2.1478. Disponível em: https://ejournal.ipinternasional.com/index.php/ijere/article/view/1478. Acesso em: 7 dec. 2025.