Lesson Plan

Solve multiplicative comparison word problems with missing factors by using equations with a symbol for the unknown

  • Created by:
  • Standards:
  • Tags:
teaches Common Core State Standards CCSS.Math.Content.4.NBT.A.3 http://corestandards.org/Math/Content/4/NBT/A/3
teaches Common Core State Standards CCSS.Math.Content.4.OA.A.2 http://corestandards.org/Math/Content/4/OA/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
Quick assign
Preview assignment >

You have saved this lesson!

Here's where you can access your saved items.

Dismiss
Content placeholder

Card of

  1. Begin lesson Begin assignment

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.

Big Ideas: In a multiplicative comparison, if the group size or the number of groups is unknown, this is a missing factor, which can be solved with division. Multiplying by x is the inverse of dividing by x. This lesson builds on students' understanding of multiplicative comparison and the inverse relationship between multiplication and division. The task asks students to determine quantities of items given in terms of multiplicative comparisons in which factors are unknown. Vocabulary: multiplicative comparison, factor, product, division, inverse, quotient, group size, multiplier Special Materials: graph paper linking cubes base ten blocks
Provide feedback