Counting Comparer (10)

Sub Trajectory: comparing

Compares with counting, even when larger collection's objects are smaller, up to 10.


You may see this:

Linked Image to Sign In/Sign Up page

Other Examples:

  • A child accurately counts two collections of 9 blocks each, and says they have the same number, even if one collection has larger blocks.

Help your student become a(n) Counting Comparer (10)

Activities ask the child to count two sets up to 10 and use the results of the counting to see if they are the same number (or if one has more), regardless of the similarity of the objects or their 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.

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.