Little Actions. Big Impact!

All the tools you need to help your child learn and grow

from PA Promise in partnership with OCDEL

Developmental Milestones Checklist: What changes should you expect as your child grows?

This milestone chart can help you check your child's development against common milestones.


12 to 15 months

Toddler walking holding hands of adult

Taking first steps. At this age, toddlers are making their first efforts at independence. They begin walking and talking. Hearing them say "It's mine" is common. Toddlers are aware of other children, but still may prefer to play alone.

Check the box on each line that mentions at least two activities your child is doing, then click Tell me more.

Tell me more!

Concerned about your child’s development?

Call Pennsylvania’s CONNECT Helpline at 1-800-692-7288 for information about your child’s development and connecting to Early Intervention services in Pennsylvania.

Call Child Care Works Helpline at 1-877-4-PA-KIDS (1-877-472-5437) for information about finding, paying for and other concerns related to child care.

Learn more about these Helplines