Al-Shawabkeh, H., Al-Khouri, B., Hamdan, S. ., & Aulia Mawaddah, I. . (2026). PROJECT-BASED LEARNING AND 21ST-CENTURY SKILLS: DEVELOPING CRITICAL THINKING AND COLLABORATION IN PRIMARY CLASSROOMS. International Journal of Educatio Elementaria and Psychologia, 3(1), 1–13. https://doi.org/10.70177/ijeep.v3i1.3383