Daraa, Ahlam. “Academic Learning Time Investment In Some Organized Games’ Lessons and Its Relation With Direct and Indirect Learning”. Journal of Physical Education 31, no. 4 (December 28, 2019): 71–78. Accessed May 4, 2024. https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/893.