Lesson Plan

6. Use rates to compare growth: Who grew faster? (Project MELD)

teaches Common Core State Standards CCSS.Math.Content.6.RP.A.2 http://corestandards.org/Math/Content/6/RP/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
Quick assign

You have saved this lesson!

Here's where you can access your saved items.

Content placeholder

Card of

or to view additional materials

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

Lesson objective: Apply knowledge of unit rate to determine which sibling grew faster.

This lesson provides an opportunity for students to apply their knowledge and understanding of unit rate to a real-world situation. Students are asked to determine which sibling grew faster given data about height measurements and the year those measurements were taken.

Key Concept students will use: 

  • Every ratio can be associated with a unit rate; the ratio a:b is associated with the unit rate a:b/1.

Skills students will use:

  • calculating a unit rate given a ratio
  • comparing unit rates

Students engage in Mathematical Practice 4 (Model with mathematics) as they identify the important quantities on the height chart and map their relationships so they can draw conclusions about which child grew fastest. 

Key vocabulary: 

  • ratio
  • ratio table
  • unit rate


Provide feedback