Building and Breaking Numbers · Algebraic Thinking

Taking Groups Apart

Exploring subtraction as taking apart sets and finding the difference between quantities.

Key Questions

  1. 1How is taking away different from putting together?
  2. 2What are different ways we can show a 'hidden' part of a number?
  3. 3When we subtract, why is the result always smaller than the starting amount?

Common Core State Standards

CCSS.Math.Content.K.OA.A.1CCSS.Math.Content.K.OA.A.3
Grade: Kindergarten
Subject: Mathematics
Unit: Building and Breaking Numbers
Period: Algebraic Thinking

Suggested Methodologies

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