Algebraic Thinking: Patterns and Equations · Operations & Algebraic Thinking

The Symmetry of Even and Odd

Investigating the properties of numbers that can be divided into two equal groups or pairs.

Key Questions

  1. 1What makes a number 'even' when looking at it as a collection of pairs?
  2. 2Why does adding two odd numbers always result in an even sum?
  3. 3How can we use rectangular arrays to prove a number is even?

Common Core State Standards

CCSS.Math.Content.2.OA.C.3
Grade: 2nd Grade
Subject: Mathematics
Unit: Algebraic Thinking: Patterns and Equations
Period: Operations & Algebraic Thinking

Suggested Methodologies

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