Saeed Gheni Noori /Falah kadhim Dhaigham. The effectiveness of the Clear ARCS motivational model in learning the skill of bottom-facing volleyball for students. misan jas [Internet]. 2021Jul.31 [cited 2024Oct.30];20(40):22-1. Available from: http://misan-jas.com/index.php/ojs/article/view/177