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

Lesson Plan

10. Finding Fractions with Different Denominators on a Number Line (A)

teaches Common Core State Standards CCSS.Math.Content.3.MD.B.4
teaches Common Core State Standards CCSS.Math.Content.3.NF.A.2
teaches Common Core State Standards CCSS.Math.Practice.MP6
Quick assign

You have saved this lesson!

Here's where you can access your saved items.


Card of

or to view additional materials

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

Lesson objective: Locate fractions on a number line that is partitioned into a different denominator.

This lesson provides an opportunity for students to apply their knowledge and understanding of locating fractions on a number line to a mathematical situation. Students are asked to complete a drawing of a number line labeling both fourths and thirds on the same line.

Key Concept students will use: 

  • When a whole is partitioned into b equal sized pieces, each piece is 1/b of the whole. It takes b of these pieces to make the whole. When we take a of those pieces, the result is a/b.

Skills students will use:

  • partitioning a number line to find fractions (Grade 3, Unit 4)
  • re-partitioning a number line to find distances or lengths with precision (Grade 3, Unit 5)

Students engage in Mathematical Practice 6 (attend to precision) as they partition a number line into different size pieces to find fractions with different denominators.

Key vocabulary: 

  • denominator
  • partition
  • same-size pieces
  • unit fraction
Related content

Appears in

Using fractions in measurement & data

Provide feedback