Unlocking Childhood Development: Understanding Key MilestonesSigns of Healthy Growth

Learn the Signs. Act Early.

At CDC, we're dedicated to saving lives and protecting people by sharing information about how children develop. Milestones are those key moments such as taking their first step, smiling for the very first time, or waving goodbye. Understanding these signs helps us guide parents on what to expect as their child grows.

Let's explore milestones based on your child's age:

• 2 Months: Your infant is learning to lift their head during tummy time and can track moving objects with their eyes.

• 4 Months: The baby rolls over from back to stomach, laughs when you tickle them, and holds onto toys.

• 6 Months: They reach for toys they see, copy simple sounds like babbling, and sit up unsupported.

• 9 Months: Your child attempts to crawl or scoot, shows delight when recognized, and grasps objects with both hands.

• 1 Year: They walk alone, say a few words, and show interest in putting things together like stacking blocks.

• 15 Months: The toddler takes steps while holding your hand, points at pictures, and follows simple instructions.

• 18 Months: Your child attempts to climb strs, says sentences with 3 words, and can sort objects by size or shape.

• 2 Years: They run confidently, use a few sentences in conversation, and pret play using toys.

• 30 Months: The youngster skips, joins the dots during coloring activities, and asks questions about what they see.

• 3 Years: At this age, children can hop on one foot, tell time to the hour, and engage deeply in imaginative play.

• 4 Years: They skip rope, name colors accurately, and create drawings with different shapes.

• 5 Years: Children pedal a tricycle effectively, read simple texts aloud, and demonstrate creativity through crafting projects.

These developmental milestones are indicators of how children progress from infancy to early childhood. It's essential for parents and caregivers to recognize these signs as they play, learn, speak, act, and move.

Parents should track their child’s progress using CDC’s free Milestone Tracker App or completing the checklist online. Downloadable milestone checklists in English are also avlable.

If you're ever concerned about your child's development, there are resources for learning signs of potential issues and what steps to take next.

Acknowledgments: A special thank you goes out to all subject matter experts and contributors who helped update this content with accurate data and developmental milestones. We especially recognize Drs. Paul H. Lipkin, Michelle M. Macias, Julie Fajko Pajek, Judith Shaw, Karnesha Slaughter, Jane K. Squires, Toni Whitaker, Lisa D. Wiggins, Jennifer Zubler, along with Natalia Benza and Jose O. Rodriguez for their invaluable contributions.

To learn more about CDC's Learn the Signs. Act Early. program or see videos of milestones in action, visit our website pages dedicated to child development, positive parenting tips, resources for healthcare providers, early childhood educators, WIC programs, home visiting programs, and promising practices.

For accessibility information and links to external platforms like Facebook, Twitter, LinkedIn, YouTube, and more, please check out the About CDC section.

If you need further assistance or information on how to help your child cope with changes due to COVID-19, visit our dedicated resources for parents caring for children during these times.

is not inted as a substitute for professional developmental screening tools; however, it serves as a helpful guide for parents and caregivers.
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