Abby asks questions about animals and Tayla talks to her toys. Find friends, words and letters in this fun book. From A-Z, explore how children who use AAC, discover letters of the alphabet. AAC stands for Augmentative and Alternative Communication . It sounds complicated but it's not. Some children cannot always speak, so they use AAC. AAC can be communicating with pictures or gestures or typing. Children who use AAC may communicate differently but they have stories and ideas to share with the world. AAC users can learn literacy and have amazing adventures. Join them in this book.