The video explains a strategy to expand vocabulary using books for those using AAC. The activity choice board can be used to find words from a story in an AAC device, such as looking for school items after reading a story about the first day of school. The complexity of the story can increase the variety of words, and the educator can model words from the book in the student’s AAC system. It is suggested to challenge students with more complex stories and not shy away from chapter books.