The document provides instructions and examples for a lesson on changing scales in drawings. Students are given sample survey questions to practice converting measurements between scales, including the scale of the original drawing, the actual length and width of the house, and the actual area. The closing asks questions about why different scales may be needed and how to determine the scale factor when converting between scales.

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An Exercise in
Changing Scales
Do Now: Survey Examples
10/22/15Module 1, Lesson 21
HW: Begin Preparing for Exam 2
Exam 2 Monday 10/26

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Survey Examples
1.) What is the scale?
2.) What is the actual length of the house?
3.) What is the actual width of the house?
4.) What is actual area of the house?

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Closing:
Why might you want to produce a scale drawing of a different scale?
How do you produce another scale drawing given the original scale
drawing and a different scale?
How can you tell if a new scale drawing is a scale drawing of the
original figure?
How can the scale factor of the new drawing to the original figure
be determined?