Many children - especially those on the Autism spectrum - have shown significant improvement in acquiring language skills when involved in physical activity. Even simple actions; such as clapping and tapping, can increase the acquisition of speech and language skills. A lot of language is learned during activities. Spatial concepts, especially, are more easily learned when interacting with 3-D objects.
On Your Way to A.P.E. or Motor Lab - with a FREE Picture Communication Board for AAC Users
In many preschool programs the speech-language pathologist teams up with the O.T. and/or P.T. for therapy time. There is a good reason for this.
I have been a speech-language pathologist for 38 years. In that time I have worked with kids and adults with a wide range of developmental disabilities; especially kids with autism. I have also worked in the public schools with kids with significant language learning disabilities. I give workshops, provide training to school district staff, speak at national conferences, and provide evaluations for speech-language and AAC.