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Lesson Plan

Reproduce a scale drawing at a different scale by using scale factors

teaches Common Core State Standards CCSS.Math.Content.7.G.A.1 http://corestandards.org/Math/Content/7/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8
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Big Ideas: The dimensions on a scale drawing can be multiplied by a scale factor to create a new scale drawing. An original drawing can be increased or decreased by a scale factor to create Scale Drawing 1. Scale Drawing 1 can be increased or decreased by a scale factor to create Scale Drawing 2. Scale Drawing 2 is also a scale drawing of the original. This lesson builds on students’ previous work using proportional reasoning to find new dimensions. The task requires students to reproduce a scale drawing at a different scale from the original by using a scale factor. Students must measure dimensions on a map and increase those dimensions by a scale factor to find new dimensions and reproduce those on paper. The mathematical concepts in the lesson build toward student understanding of dilations of geometric figures on the coordinate plane. Vocabulary: scale, scale factor, scale drawing, dimensions, area Special Materials: handout ruler protractor (optional) scissors (optional)
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