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Developmental Milestones

7 month old

By 7 Months, Your Child Should:

  • Roll stomach-to-back
  • Mouth objects
  • Sit while leaning on hands
  • Babble
  • Smile socially at other people

12 month oldBy 12 Months, Your Child Should:

  • Walk holding onto furniture
  • Use 2-3 words
  • Imitate actions in play
  • Identify body parts
  • Scribble with crayon 

18 month oldBy 18 Months, Your Child Should:

  • Explore everything
  • Do simple pretend play
  • Run
  • Use 10-12 words, mostly nouns
  • Point to pictures in a book

24 month oldBy 24 Months, Your Child Should:

  • Open doors and unscrew lids
  • Kick a ball
  • Follow simple directions
  • Say at least 50 words
  • Become interested in other children

36 month oldBy 36 Months, Your Child Should:

  • Enjoy books and being read to
  • Match colors
  • Pedal a riding toy
  • Ask and answer questions
  • Imitate adults and playmates
Download CDC's FREE milestone tracker app. Track milestones, share a summary, get tips and activities. Learn more at cdc.gov/MilestoneTracker

For more detailed milestones, tips, activities, and more, download the CDC free milestone app!


The CDC's Act Early page has free printable books that you can download and print in English or Spanish. These special books include specific milestones to look for as you read with your child. 
CDC Act Early Free Books

Developmental Screening 

Little girl measures her height. Text says: What is “developmental screening”? Like a yardstick for measuring height, developmental screening is a tool that helps families measure their children’s Development through the early years, including: 1.How children use their hands, bodies and senses (motor skills). 2.How children think and solve problems (cognitive skills). 3.How children use language - speaking, listening and understanding (communication skills). 4.How children express their emotions and relate to others (social and emotional skills). 5.How children help take care of their own needs, like feeding and dressing (personal). Ask your child’s healthcare provider about additional screenings - such as oral health, behavioral health, nutrition, vision and hearing -that help determine if your child is on track in these important health areas. Why is developmental screening important? Developmental Screening is important for all young children! We know that children grow and learn at their own rates, but it’s still important to assure that they are developing as expected. You can both track and promote your child’s development with fast and fun screening activities that help you: 1.Make sure your child is on track 2.Learn about what’s coming next in your child’s development and 3.Discover new ways to help your child grow and learn. Screening your child regularly is also the best way to catch any concerns early when the right information at the right time makes all the difference!