Atwa, Zaher, Rosseni Din, Nabilah Othman, and Muhammad Hussin. “Evaluating Contribution of Flipped Learning on Secondary Students’ Critical Thinking Skills Toward Learning Physics in Palestine”. International Journal of Engineering & Technology 7, no. 4.21 (November 26, 2018): 53–57. Accessed May 6, 2024. https://sciencepubco.com/index.php/ijet/article/view/21615.