This is a great chart that addresses speech development. While it's important that we educated our kids in a fun way we also should be aware of the things pertaining to speech development: the earlier the better. Intervention is so crucial in early months and years.
Home Speech Home: Simplifying Speech Therapy. Provides detailed, easy to understand information about: -speech and language development -child speech and language disorders -adult speech and language disorders -home therapy ideas for a variety of disorders -printable and useable resources for parents, caregivers, and SLPs