Child Development


Milestones Matter in a Child's Development!

From birth to age five, a child should reach milestones in how he or she plays, learns, speaks, acts, and moves. The CDC’s Learn the Signs. Act Early resources make it easy to monitor developmental milestones from two months through five years of age. Track, celebrate and share milestones; get tips and activities to boost development; and learn when (and how) to act if there are concerns.

Track your child’s milestones with CDC’s free Milestone Tracker app!

Download it free today on iOS and Android devices in English and Spanish.

Are you concerned about how your child is developing?

Families have choices when seeking a developmental screening for their child:

  • Contact your child’s doctor and ask for a screening
  • Contact Birth to Three if your child is under age 3: (800) 305-3064
  • Contact your local community health staff: (800) 305-3064
  • Contact your local elementary school if your child is age 3 or older
  • Contact South Dakota Parent Connection for free guidance and support: (605) 361-3171


Parent Tip Sheet: Concerned? English:  How to Get Help 
Spanish: How to Get Help

Receive free SD Act Early materials to help you monitor your child’s milestones: Order Online.

An adult lifts a smiling baby into the air outdoors, with a small CDC Learn the Signs. Act Early banner in the corner.

For Professionals

CDC’s Learn the Signs. Act Early. program encourages parents and providers to learn the signs of healthy development, monitor every child’s early development, and take action when there is a concern.

Receive free SD Act Early materials to help families and providers monitor a child’s developmental milestones:  Order Online.

Please contact the CDC’s Act Early Ambassador to SD for assistance or with questions, Lisa Sanderson at lsanderson@sdparent.org, (605) 361-3171.

Featured Resource

This free, on-demand learning series is designed to help families across South Dakota understand special education step by step. Each short session breaks down important topics in clear, parent-friendly language.

In this series, you’ll learn:

  • How evaluations and eligibility decisions are made
  • What questions to ask — and how to advocate with confidence
  • What an IEP is and how meetings work
  • How goals, services, and supports are decided
  • What the Least Restrictive Environment (LRE) means
  • How Extended School Year (ESY) is determined