Karama, Muneer. “Measuring the Degree of Effectiveness of the Activities in the Eighth-Grade Mathematics Textbook Content from the Perspective of Teachers”. International Journal of research in Educational Sciences. 7, no. 4 (September 15, 2024): 191 - 226. Accessed December 22, 2024. http://iafh.net/index.php/IJRES/article/view/479.