Skill
Counts to Ten
Child counts objects to ten using one-to-one correspondence.
Ages 30–54 months
Why it matters
Counting with one-to-one correspondence — one number word per object — is the core of number sense and the prerequisite for comparing and combining quantities.
Builds toward this milestone
- knows number names and the count sequence. — Head Start ELOF
- recognizes the number of objects in a small set. — Head Start ELOF
- understands the relationship between numbers and quantities. — Head Start ELOF
- develops sense of number and quantity. — Head Start ELOF
What mastery looks like
- Recites number words in order to ten.
- Counts a set of up to ten objects, touching each once and saying one number per object.
How to observe it
- When counting snacks or toys, does the child assign exactly one number to each item?
Accessibility
- Use objects that are easy to grasp or fixed in a row for children with motor differences.
- Allow counting by sliding/touching for children who cannot pick items up.
Activities
Evidence
- CDC "Learn the Signs. Act Early." Developmental Milestones — U.S. Centers for Disease Control and Prevention · 2022 · U.S. Centers for Disease Control and Prevention
- Head Start Early Learning Outcomes Framework (ELOF) — U.S. Office of Head Start · 2015 · U.S. Department of Health and Human Services
Early Atlas