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.).
Even though each developmental miles has an age range, children are all unique and can vary in their development.
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.
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.
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.