Counting Comparer (5)
Sub Trajectory: comparing

Compares with counting , even when larger collection's objects are smaller. Later, figures out how many more or less.


You may see this:

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Other Examples:

  • A child accurately counts two equal collections of 4 blocks and says they have the same number. When asked if the collection of larger blocks has more or less, the child says “They are the same.”

Help your student become a(n) Counting Comparer (5)

As in activities for Counting Comparer (Same Size), these activities ask children to count two sets up to 5 and *use* the results of the counting to see if they are the same number (or if one has more). However, these activities challenge children to compare sets composed of different objects, often in different arrangements. Scaffolding might include explaining to a mixed-up puppet why the size of an object doesn't matter or putting the sets in one-to-one correspondence to illustrate the number comparison.

Practice-based Research: The fives and tens formats on the dot cards (also on counting cards with dots an numerals) also highlight the plus 1 growing pattern: each card has one more square filled in. When using dot cards, emphasize their visual structure and the growing pattern.

Dot Comparer

Flip to Compare (to 5)

Longest Train

Special Thanks To

Institute of Education Sciences
The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through grant numbers R305K050157, R305A120813, R305A110188, and R305A150243. to the University of Denver. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.