Angie Brasher is a Speech and Language Pathologist.  She breaks down language development in an easy format.  She talks about the importance of early intervention in promoting language development and what parents can do to help kiddos build on this skill.  Angie's blog post on Augmentative and Alternative Communication Devices(AAC) can be accessed at this link https://www.raisingkellan.org/what-are-augmentative-and-alternative-communication-aac-devices/