Lesson plan

3. Measure and draw fractional lengths on number lines and rulers (FP)

  • From K-5 Math Companion Curriculum
  • Created by
  • Standards
  • Tags:
teaches Common Core State Standards 3.MD.B.4 http://corestandards.org/Math/Content/3/MD/B/4
teaches Common Core State Standards MP5 http://corestandards.org/Math/Practice/MP5
Print / PDF

You have saved this lesson plan!

Here's where you can access your saved items.

Dismiss
Press ESC or click here to exit full screen

Tip: swipe on touch devices, use your keyboard's ← and → arrow keys, or clicker buttons to quickly navigate the lesson plan

or to view additional materials

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

Lesson objective: Measure and draw fractional lengths on number lines and rulers.

This lesson helps to build procedural skill with identifying unit fractions on a number line (and ruler). The partitioning of number lines and rulers are used here to introduce the idea that fractional lengths are invariant. This work develops students' understanding that a length does not change if its position on a number line or ruler changes.

Students engage in Mathematical Practice 5 (use appropriate tools strategically) as they measure and draw fractional lengths on both number lines and rulers.

Key vocabulary:

  • align
  • length
  • number line
  • partition
  • ruler
  • unit
  • unit fraction