Skip directly to site content Skip directly to search
Español | Other Languages
U.S. flag An official website of the United States government
Official icon

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Lock icon

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Learn the Signs. Act Early.
Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People CDC Logo CDC Logo Learn the Signs. Act Early.
Learn the Signs. Act Early.
  • Milestones
    • BACK
      Milestones
    • 2 months
    • 4 months
    • 6 months
    • 9 months
    • 1 year
    • 15 months
    • 18 months
    • 2 years
    • 30 months
    • 3 years
    • 4 years
    • 5 years
    • Learn the Signs. Act Early. Home
  • Milestone Tracker App
  • Digital Online Checklist
    • BACK
      Digital Online Checklist
    • 2 Month
    • 4 month
    • 6 month
    • 9 month
    • 1 year
    • 15 months
    • 18 months
    • 2 year
    • 30 months
    • 3 year
    • 4 year
    • 5 year
    • Learn the Signs. Act Early. Home
  • Milestones in Action: Photos & Videos
    • BACK
      Milestones in Action: Photos & Videos
    • 2 months
    • 4 months
    • 6 months
    • 9 months
    • 1 year
    • 15 months
    • 18 months
    • 2 year
    • 30 months
    • 3 year
    • 4 year 
    • 5 year
    • Learn the Signs. Act Early. Home
  • If You’re Concerned
    • BACK
      If You’re Concerned
    • Why Act Early?
    • What to Say
    • While You Wait
    • Developmental Screening
    • Learn the Signs. Act Early. Home
  • Free Materials
    • BACK
      Free Materials
    • View or Order Materials
    • Amazing Books
    • Customize Materials
    • Translate Materials
    • Learn the Signs. Act Early. Home
  • Videos, Social Media, and Web Buttons
  • Families
    • BACK
      Families
    • Early Intervention
      • BACK
        Early Intervention
      • BACK
        FamiliesEarly Intervention
      • Information by State
      • Learn the Signs. Act Early. Home
    • Developmental Milestones Matter
    • Learn the Signs. Act Early. Home
  • Healthcare Providers
  • Early Childhood Educators
    • BACK
      Early Childhood Educators
    • Early Care and Education Programs
    • Watch Me! Training
    • Child Care Development Fund
    • Early Head Start and Head Start Programs
    • Learn the Signs. Act Early. Home
  • WIC Programs
    • BACK
      WIC Programs
    • WIC Implementation Guide
    • Learn the Signs. Act Early. Home
  • Home Visiting Programs
  • Promising Practices
  • Partners
  • About the Program
    • BACK
      About the Program
    • Act Early Initiative
      • BACK
        Act Early Initiative
      • BACK
        About the ProgramAct Early Initiative
      • Act Early Ambassadors
      • Learn the Signs. Act Early. Home
    • Act Early Response to COVID-19
    • Learn the Signs. Act Early. Home
  • Learn the Signs. Act Early. Home
Learn the Signs. Act Early.
Help your child grow and thrive. Download CDC's free Milestone Tracker app.

“Learn the Signs. Act Early.”

Español (Spanish)
Print
plus
Related Pages

From birth to 5 years, your child should reach milestones in how he plays, learns, speaks, acts and moves. Track your child’s development and act early if you have a concern.

Milestones

Milestones for children 2 months – 5 years of age

If You’re Concerned

What to do if concerned about your child’s development

Families

Track your child’s developmental milestones

Healthcare Providers

Free tools to support developmental surveillance

Early Childhood Educators

Free tools to track milestones and engage families

Free Materials

Print or order free materials

WIC Program Staff

Free tools to help WIC staff support child development

Home Visitors

Free tools to track child development

Watch Me! Training

Training for early care and education providers

About the Program

Overview of the program, research, and evaluation

Milestones in Action Photo and Video Library
Milestones in action web button

View and download free photos and videos of children showing different milestones from 2 months to 5 years of age!

Act Early Ambassadors
Image of ambassadors meeting together

Act Early Ambassadors work to integrate LTSAE across the country.

More
Birth to 5: Watch Me Thrive!
A baby smiling

A federal effort to encourage healthy child development.

More
Early Intervention Contacts
Man holding phone and baby

Here you’ll find the agency to contact in your state if you have a concern about your young child’s development.

More
Promising Practices
Parent reading flyer

See how others help their communities "Learn the Signs." and "Act Early."

More
Last Reviewed: January 17, 2025
Source: National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention
  • Facebook
  • Twitter
  • LinkedIn
  • Syndicate
homeLearn the Signs Home
  • Milestonesplus icon
    • 2 months
    • 4 months
    • 6 months
    • 9 months
    • 1 year
    • 15 months
    • 18 months
    • 2 years
    • 30 months
    • 3 years
    • 4 years
    • 5 years
  • Milestone Tracker App
  • Digital Online Checklistplus icon
    • 2 Month
    • 4 month
    • 6 month
    • 9 month
    • 1 year
    • 15 months
    • 18 months
    • 2 year
    • 30 months
    • 3 year
    • 4 year
    • 5 year
  • Milestones in Action: Photos & Videosplus icon
    • 2 months
    • 4 months
    • 6 months
    • 9 months
    • 1 year
    • 15 months
    • 18 months
    • 2 year
    • 30 months
    • 3 year
    • 4 year 
    • 5 year
  • If You’re Concernedplus icon
    • Why Act Early?
    • What to Say
    • While You Wait
    • Developmental Screening
  • Free Materialsplus icon
    • View or Order Materials
    • Amazing Books
    • Customize Materials
    • Translate Materials
  • Videos, Social Media, and Web Buttons
  • Familiesplus icon
    • Early Interventionplus icon
      • Information by State
    • Developmental Milestones Matter
  • Healthcare Providers
  • Early Childhood Educators plus icon
    • Early Care and Education Programs
    • Watch Me! Training
    • Child Care Development Fund
    • Early Head Start and Head Start Programs
  • WIC Programsplus icon
    • WIC Implementation Guide
  • Home Visiting Programs
  • Promising Practices
  • Partners
  • About the Programplus icon
    • Act Early Initiativeplus icon
      • Act Early Ambassadors
    • Act Early Response to COVID-19
  • About CDC
  • Contact Us
  • 800-232-4636
Facebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat RSS
  • Contact Us
    Call 800-232-4636
    Email Us
    • About CDC
    • Jobs
    • Funding
    • Accessibility
    • External Links
    • Privacy
    • Web Policies
    • FOIA
    • OIG
    • No Fear Act
    • Nondiscrimination
    • Vulnerability Disclosure Policy
    • CDC Archive
    • Public Health Publications
    • HHS.gov
    • USA.gov
    • Facebook
    • Twitter
    • Instagram
    • LinkedIn
    • Youtube
    • Pinterest
    • Snapchat
    • Email
    • Español
    • 繁體中文
    • Tiếng Việt
    • 한국어
    • Tagalog
    • Русский
    • العربية
    • Kreyòl Ayisyen
    • Français
    • Polski
    • Português
    • Italiano
    • Deutsch
    • 日本語
    • فارسی
    • English
  • Accessibility
  • External Links
  • Privacy
  • Web Policies
  • FOIA
  • OIG
  • No Fear Act
  • Nondiscrimination
  • Vulnerability Disclosure Policy
  • CDC Archive
  • Public Health Publications
  • HHS.gov
  • USA.gov
Content Credentials logo Content Credential

This image was edited or created using GenAI (generative artificial intelligence).

Our experts review all images in an effort to ensure accuracy and quality before use.

Learn more about CDC's usage of GenAI.

SAS stats