The document is notes from a math lesson on changing scales. It includes examples of scaling up and down, as well as questions about determining scale factors and producing new scale drawings. Homework is to study for an upcoming quiz, though the quiz date has been moved to Monday. The lesson covers completing tables with scale calculations, worked problems on scaling drawings, and concepts such as determining if a drawing is an accurate scale representation and calculating scale factors between drawings.

1. Module 1 Lesson 21.notebook
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Module 1, Lesson 21
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An Exercise in
Changing Scales
HW: Study for Quiz 2
Quiz 2 moved to Monday
Do Now: Complete the following table.
x
y
total
3.25
4
6
12
1
2
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Problem Set Sample Solution continued...
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Problem Set Sample Solution continued...
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Problem Set Sample Solution continued...
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Problem Set Sample Solution continued...
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Questions:
1.) Would this new scale create a larger or smaller scale drawing
as compared to the original?
2.) How would you use the scale factor between SD1 and SD2 to
calculate the new scale drawing lengths without using the original
measurements?
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3
1
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4
1
2
2
3
3
2
4
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Reduction
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Enlargements
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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?
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