Length Direct Comparer

Sub Trajectory: Non-Measurement Comparison

Physically aligns two objects to determine which is longer or if they are the same length. Uses terms: long, longer, longest.


You may see this:

Linked Image to Sign In/Sign Up page

Other Examples:

  • Child stands two sticks up next to each other on a table and says, "This one's bigger."

Help your student become a(n) Length Direct Comparer

Activities focus on the full competence of direct comparison of length--lining up objects at one of their endpoints and then comparing the other endpoints. Comparing heights back-to-back is fine as an initial activity, but the one endpoint (feet!) is done for the child so is often not recognized. Having a mixed-up puppet make mistakes and asking the children to help him can be fun and generate good discussion and good ideas.

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.