Mustafa, I.M. 2019. Effect of The Percentage of The Contribution of Some Factors in The Implementation of The Lesson of Physical Education: For middle schools in Erbil Governorate. Koya University Journal of Humanities and Social Sciences. 2, 2 (Dec. 2019), 117-121. DOI:https://doi.org/10.14500/kujhss.v2n2y2019.pp117-121.