Lesson plan

9. Comparing fractions using a variety of strategies (FP)

teaches Common Core State Standards CCSS.Math.Content.3.NF.A.3 http://corestandards.org/Math/Content/3/NF/A/3
teaches Common Core State Standards CCSS.Math.Content.3.NF.A.3d http://corestandards.org/Math/Content/3/NF/A/3/d
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
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Lesson objective: Practice comparing fractions using multiple strategies: reasoning about their size, common numerators, or common denominators. This lesson includes fractions greater than one.

This lesson helps to build fluency with comparing fractions with like denominators and with comparing those with like numerators. Examples include improper fractions. Visual models are used here because it supports students thinking around reasoning about the size of fractions. This work develops students' understanding that fractions can be represented in multiple ways to be compared.

Students engage in Mathematical Practice 4 (Model with mathematics) as they solve word problems that require the use of visual models for representation and comparison.

Key vocabulary:

  • area models
  • compare
  • denominator
  • number line
  • numerator
  • tape diagram

Special materials needed:

  • fraction strips
  • paper
  • pencil