Milestoneunknown· 3y–6y

Adds three and two together mentally

Can child add three and two together without using objects?

Unknown

What the research says

Framework evidence being indexed.

Full quotes, source languages, and document links coming soon as we finish the source-evidence indexing pass.

Normative evidence

1 source back this milestone. The bars below show the age range each source covers.

This milestone3y–6yMELQO4y–6y012243648607284months
Milestone windowNormative study
The coral bar shows this milestone's typical age window. The bars below show the age coverage of each backing source.
MELQO →

What mastery looks like

Not yet

Cannot yet adds three and two together mentally

  • No observable behavior matching this item
Emerging

Beginning to show adds three and two together mentally with direct support

  • Requires prompting or physical assistance
Developing

Demonstrates adds three and two together mentally inconsistently

  • Performs with mild support
  • Inconsistent across contexts
Secure

Consistently demonstrates across contexts

  • Reliably demonstrates without prompting
Reflexive

Masters item; demonstrates generalization

  • Applies skill spontaneously in novel situations

Activities for this (1)

Thinking2.8y–6.2y

Counting and Puzzles

Parent observes seven early mathematics milestones from MELQO at 36-72mo: verbal counting range, recognising written numerals, mental addition, giving a specified number on request, comparing two numbers, completing a five-piece puzzle, and understanding spatial prepositions (on, under, in front of, next to).

Formal assessments

No matching assessment items indexed yet.