The research aimed at investigating the effect of using teaching activities for developing some receptive language skills determined in the light of The ABLLS-R at children with Autism Spectrum Disorder (ASD) integrated in primary schools. The research employed a one group pre-posttest design. Subjects were (18) male and female second year primary school pupils with autism spectrum disorder at Assuit City. The experiment lasted for one academic semester. Tools of the research included: (1) a set of teaching activities, (2) a receptive language skills checklist, (3) an observation sheet of receptive language skills and (4) a receptive language sub-skills test. Mean scores and standard deviation for students' scores in the observation sheet were calculated to determine students' level in receptive language skills and were found to be low. Wilcoxon signed-rank test of paired samples was used to reveal significance of differences between means of ranks of the study group scores in the pre and the post implementation of the receptive language sub-skills test. Analysis of data indicated significantly better post gains. The research concluded that the proposed teaching activities had a positive effect in developing receptive language skills at primary school children with ASD.