Your device is currently offline. You can view downloaded files in My Downloads.

Lesson Plan

4. Compare fractions with a common benchmark (C)

teaches Common Core State Standards CCSS.Math.Content.4.NF.A.2 http://corestandards.org/Math/Content/4/NF/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5
Quick Assign

You have saved this lesson!

Here's where you can access your saved items.

Dismiss

Card of

or to view additional materials

You'll gain access to interventions, extensions, task implementation guides, and more for this lesson.

Lesson objective: Extend understanding that fractions can be compared using its comparison to a benchmark fraction.

Students bring prior knowledge of comparing fractions from 3.NF.A.3.a-d. This prior knowledge is extended to using a benchmark as students compare fractions. A conceptual challenge students may encounter is understanding a reasonable benchmark fraction depends on the fractions that are being compared. 

The concept is developed through work with a number line, which shows a fraction's size in relation to a benchmark.

This work helps students deepen their understanding of number because students are reasoning about the size of a number based on its relationship to a benchmark.

Students engage in Mathematical Practice 3 (construct viable arguments and critique the reasoning of others) as they reason about the size of a fraction in comparison to its benchmark, and as they reason about the comparison of fractions because of their relationship to benchmark fractions.

Key vocabulary:

  • benchmark fraction
  • denominator
  • equivalent
  • half
  • numerator
  • relationship
  • unit fraction
Related content

Appears in

Understanding fraction equivalence and comparison

Provide feedback