Save 20% by purchasing the Core Vocabulary Book Bundle Set 1 which includes 5 adapted interactive books targeting the high frequency words DOWN, UP, GO, STOP, and PUT. Each Book is sold separately at $3.00 per book. Save 20% by purchasing the bundle,Please consider your purchase carefully if you have already purchased one or more of these books.The AAC Core Books are perfect for speech therapy and special education students. If you have students using AAC (augmentative-alternative communication)