Lesson Plan

6. Using the Standard Algorithm: Iterating Groups and Comparisons (FP)

teaches Common Core State Standards CCSS.Math.Content.5.NBT.B.5 http://corestandards.org/Math/Content/5/NBT/B/5
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8
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Lesson objective: Solve problems involving repeated equal groups and/or problems involving comparisons using the standard algorithm for multiplication.

This lesson helps to build procedural skill with multi-digit multiplication. The standard algorithm is used here because it supports fluency. This work develops students' understanding that the standard algorithm for multiplication works whether the multiplication situation is iterating groups or is a comparison situation.

Students engage in Mathematical Practice 1 (Making sense of problems) as they solve problems which require them to classify problems as either a situation of iterating groups or a comparison situation and solve them using the standard algorithm. Students will solve real world problems involving iterating groups and/or comparisons.

Key vocabulary:

  • comparisons
  • iterating groups

 

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