The number of individual with autism has been increased past decades. Along with the prevalence, diverse instruction strategies were introduced and implemented in the field of adapted physical education/activity. The purpose of this case study is investigating the effectiveness of the instructional strategies for children with disabilities. A student, nine years old boy with autism, participated in this study. Four different teaching strategies, reproductive teaching style, video modeling, system of least prompts, and chaining strategy, were implemented to teach a target skill, overhand throw. Task analysis were implemented to measure the skill performance weekly for three weeks. The result indicated that the participant showed improvement in on a skill component, T position. The participant did not showed notable improvement on overall skill performance.