Du, X. ., Chaaban, Y. . and ALMabrd, Y. M. . (2019) “Exploring the Concepts of Fidelity and Adaptation in the Implementation of Project Based Learning in the Elementary Classroom: Case Studies from Qatar”, International Journal of Learning, Teaching and Educational Research, 18(9), pp. 1–22. Available at: https://www.ijlter.myres.net/index.php/ijlter/article/view/504 (Accessed: 27 August 2026).