Matching Comparer

Sub Trajectory: comparing

Compares groups of 1-6 by matching and understands that the two sets contain the same number. May count the collections, but does not rely on the results of counting to compare them.

Activities

You may see this:

Linked Image to Sign In/Sign Up page

Other Examples:

  • A child gives one toy bone to every dog and says there are the same number of dogs and bones.
  • A child may count the collections, but does not rely on the results of counting to compare them. Instead, notices whether the quantities match.

Help your student become a(n) Matching Comparer

Activities differ from the similar-sounding level of "Object Corresponder" because here they ask the child to not only put two sets into one-to-one correspondence, but also make judgements about the number in the two sets. Do they have the same number, or does one have more? How do you know?

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.