The effect of using an educational tool according to some kinematic variables to learn the performance of the serve skill in tennis for female students

This research aims to design an assistive tool based on selected kinematic variables. It also aims to study the effect of this tool on improving the learning of the serving skill among the (20) female students in the study sample. One of the most important findings of the research is the effective role of the assistive tools based on the selected kinematic variables in improving the performance of the straight serve skill in the experimental group. The results also showed that repeated and varied exercises using these tools enhance the students' motivation and motivate them to continuously improve their skill performance. The researcher recommends the use of assistive tools to develop technical skills in general, while making use of all available tools and working to innovate new assistive tools and methods that serve the development of other technical skills.