Unit 1: Scale Drawings

Students study scaled copies of plane figures and scale drawings of real-world objects, learning that lengths in a scaled copy are products of the original lengths and a scale factor while angles are preserved.

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Unit

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Concept

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Practice

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Set 1

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Set 2

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Advanced

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Set 2

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What this unit covers

A Scaled Copies · 6 lessons

Goals

• Determine whether a figure is a scaled copy of another figure, by examining corresponding side lengths and angle measures.
• Draw a scaled copy of a figure using a given scale factor.

Lessons

1. What Are Scaled Copies?
2. Corresponding Parts and Scale Factors
3. Making Scaled Copies
4. Scaled Relationships
5. The Size of the Scale Factor
6. Scaling and Area (Optional)

B Scale Drawings · 6 lessons

Goals

• Create a scale drawing given the actual measurements of the object or given another scale drawing at a different scale.
• Explain how to use scales and scale drawings to calculate actual distances and areas.

Lessons

1. Scale Drawings
2. Scale Drawings and Maps (Optional)
3. Creating Scale Drawings
4. Changing Scales in Scale Drawings
5. Scales without Units
6. Units in Scale Drawings

C Let’s Put It to Work · 1 lesson

Lessons

1. Draw It to Scale (Optional)