Nabeel mahmoud shaker , Aseel ibraheem shehab , Ahmed Jalel Ismael 2021. The effect of an educational curriculum with practical presentations on developing the cognitive aspects of volleyball for fourth-year students, Faculty of Physical Education and Sports Sciences, Diyala University. PalArch’s Journal of Archaeology of Egypt / Egyptology. 18, 7 (Apr. 2021), 1238-1248.