Lesson Plan

2. The Potato Family: Using multiplication to solve word problems involving measurement (l, g, kg) (FP)

teaches Common Core State Standards CCSS.Math.Content.3.MD.A.2 http://corestandards.org/Math/Content/3/MD/A/2
teaches Common Core State Standards CCSS.Math.Content.3.OA.A.3 http://corestandards.org/Math/Content/3/OA/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Multiply measurement values.

This lesson helps to build fluency with multiplication by multiplying measurement values. Number lines and tape diagrams are used here because they support the idea of equal groups being put together. A table is also used as a tool to keep track of patterns which occur with equal groups. This works to develop students' understanding that we can use multiplication to solve problems with measurement values like liters, grams, and kilograms.

Students engage in Mathematical Practice 4 (model with mathematics) as they draw number lines, tape diagrams, or tables to solve problems involving equal groups of measurement values. Students will also use Mathematical Practice 7 as they discover that the structure of multiplication works for measurement values in the same way that multiplication works in other contexts.

Key vocabulary:

  • equal groups
  • grams (g)
  • kilograms (kg)
  • liters (L)
  • measurement values
  • multiplication
  • number line
  • table
  • tape diagram

Special materials needed:

  • In class practice worksheet
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