Raheem, Waad. “The Impact of Problem Solving Games Using Balls in the Development of Some of the Basic Movements for Nine Years Old”. Journal of Physical Education 24, no. 2 (June 28, 2012): 36. Accessed July 3, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/1749.