Conceptual Subitizer with Place Value

Identifies structured arrangements, shown only briefly, using groups, skip counting, and place value. 


You may see this:

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Other Examples:

  • A child figures ‘how many’ with this thinking - "I saw groups of tens and twos, so 10, 20, 30, 40, 42, 44, 46...46!"
  • A child decomposes by saying, “I have a 10-rod, so it has 10 units of one.”

Help your student become a(n) Conceptual Subitizer with Place Value

Game-like activities ask children to name the total number in two sets, each of which has some 10s and some 1s (best in fives and tens frames). Remember for conceptual subitizing, ask them to name the total first, but then explain how they knew by naming the (preferably two) parts they saw. 

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.