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This Writing the Equation for a Circle lesson plan also includes:
- Geometry Module 5: Teacher Materials
- Geometry Module 5: Student Materials
- Geometry Module 5: Copy Ready Materials
- Geometry Module 5, Topic D Overview
- Geometry Module 5, Topic D, Lesson 17: Teacher Version (Doc)
- Geometry Module 5, Topic D, Lesson 17: Student Version (PDF)
- Geometry Module 5, Topic D, Lesson 17: Student Version (Doc)
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Circles aren't functions, so how is it possible to write the equation for a circle? Pupils first develop the equation of a circle through application of the Pythagorean Theorem. The instructional activity then provides an exercise set for learners to practice writing the equation of a circle.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Use floor tiles as a coordinate plane and have learners stand five units from the center to model the circle in Example One
Classroom Considerations
- The class should already be familiar with the Pythagorean Theorem and/or the distance formula
- Learners should also know how translations affect coordinate points
- The 18th installment of a 23-part module
Pros
- Teacher resource provides question prompts to help guide class membersto the equation of a circle
- Scaffolding tips give teachers ideas on how to help those struggling with the concept
Cons
- Resource only gives one example of writing an equation of a circle centered at the origin before quickly moving on to circles not centered at the origin