Check out these quick resources about developmental milestones:
Developmental Milestones Chart, Developed by The Institute for Human Services for The Ohio Child Welfare Training Program (0 months – adolescent)
Child Developmental Stages and Growth Chart, Longstreet Clinic (0 months to 5 years)
The Ages and Stages of Child Development, Child Development Institute (0 months to 18 years)
Ages and Stages of Middle Childhood, YMCA Ontario (6-12 years)