BARA, Gezim; XHOMARA, Nazmi. The effect of student-centered teaching and problem-based learning on academic achievement in science. Journal of Turkish Science Education, [S. l.], v. 17, n. 2, p. 180–198, 2020. DOI: 10.36681/. Disponível em: https://www.tused.org/index.php/tused/article/view/970. Acesso em: 16 jan. 2026.