I have been searching on the internet of sites who have good development sheets for Ages and Stages. This is beneifical to not only you as a provider, but if parents come to you looking for answers!

South Dakota Bright Start

Ohio State University Extension
These are great because they are for the caregiver.

1-4 Months

5-8 Months

9-12 Months

12-18 Months

18-24 Months

2 Years

3 Years

4 Years

5 Years

The ABC's Of Child Development
Developmental Milestones For Your Child's First Five Years

Iowa State University Extension

Articles

Baby Einstein