In the study, the effect of incidental teaching method on teaching students with moderate mental retardations the ability to report requests through distance family education was examined. The study was conducted with a 10 years old male student with moderate mental retardation and bilateral mild hearing loss. The aim of the study is to contribute to the student's expressive language skills, which is one of the expressive language skills by teaching 20 determined words. ABAB model which is one of the single subject research models was used in the study. According to the findings of the study, the incidental teaching method is given with distance family education, contributed to the student's gaining the ability to express requests. As a result of the study it was seen that the incidental teaching method applied with distance family education was effective in gaining the ability to express requests.