Developmental Milestones

Skills such as taking a first step, smiling for the first time, and waving “bye bye” are called developmental milestones. Children reach milestones in how they play, learn, speak, act, and move (crawling, walking, etc.).

Click on the age of your child to see the milestones:

• 2 months
• 4 months
• 6 months
• 9 months
• 1 year
• 18 months
• 2 years
• 3 years
• 4 years
• 5 years
• Download the milestone checklists
• View the Milestones in Action  photo and video library

“Learn the signs. Act early.” materials are not a substitute for standardized, validated developmental screening tools.

Quiz

Video on Milestones

Learn how to look for developmental milestones and what to do if you’re worried about your child’s development or think there’s a problem.

Watch the video »

Child Development: It’s Better to Know (in Spanish)

Learn why it is important to recognize developmental milestones and what to do if you have concerns about your child’s development.

Watch this Spanish language video »