This document outlines training modules on autism spectrum disorders. It describes 21 modules that cover topics like defining autism, physical and cognitive characteristics, classroom environments, communication, behavior, and more. The document also discusses different types of behaviors commonly seen in students with autism, including social interaction styles, activity levels, repetitive behaviors, and challenging behaviors. It provides strategies for addressing each of these behavior types. The overall message is that understanding the reasons for problematic behaviors is crucial before attempting to change them.