The effect of difference in the style of providing digital game stimuli (fixed /changing) in e-learning environment on developing the skills of digital video design and production for instructional students with hearing impairments Abstract: The current research aims to reveal The effect of difference in the style of providing digital game stimuli (fixed /changing) in e-learning environment on developing the skills of digital video design and production for for instructional students with hearing impairments .The research sample consisted of 18 students who are third-year students with hearing disabilities in the Department of instructional Technology, Faculty of Specific Education, Zagazig University , They were chosen randomly and divided into two equal experimental groups. The research used the experimental design (the design of the two experimental groups with a pre and post test) . The research tools was an achievement test for the cognitive aspects related to digital video design and production skills, and the skill observation card for the performance aspects related to digital video design and production skills . The current research found that there are statistically significant differences at the level (0.05) between the average scores of students in the post-application of the achievement test, and the skill performance observation card due to the main effect of the difference in the style of providing digital game stimuli (fixed / changing) in an e-learning environment in favor of Changing digital game stimuli delivery style.