Improving Cognitive Engagement and Achievement in Biology through PBL: A Mixed Methods Exploration. International Journal of Emerging Perspectives in Education, [S. l.], v. 2, n. 2, p. 51–70, 2026. DOI: 10.64306/8qaseb83. Disponível em: https://ijeped.ium.edu.mv/article/view/611. Acesso em: 7 oct. 2026.