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This Making Scale Drawings Using the Ratio Method lesson plan also includes:
- Similarity, Proof, and Trigonometry - Module Overview (PDF)
- Similarity, Proof, and Trigonometry - Module Overview (Doc)
- Making Scale Drawings Using the Ratio Method (Doc)
- Making Scale Drawings Using the Ratio Method (PDF)
- Making Scale Drawings Using the Ratio Method (Doc)
- Assessment
- Answer Key
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Is that drawn to scale? Capture the artistry of geometry using the ratio method to create dilations. Mathematicians use a center and ratio to create a scaled drawing. They then use a ruler and protractor to verify measurements.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Show scholars how to use a graphic organizer to record new vocabulary, notation, and diagrams
- Use graph paper to create the dilations and use the distance formula or Pythagorean Theorem to verify lengths
Classroom Considerations
- Pupils need rulers and protractors
- The second lesson in a 36-part series
Pros
- Uses a real-life example to illustrate the application of dilations
- The lesson carefully connects the process to the properties of a dilation
Cons
- None