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This Unknown Length and Area Problems lesson plan also includes:
What is an annulus? Pupils first learn about how to create an annulus, then consider how to find the area of such shapes. They then complete a problem set on arc length and areas of sectors.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Bring in an object in the shape of an annulus and have the class determine its area
- Have learners complete problem set as homework
Classroom Considerations
- Learners need to be familiar with arc lengths and areas of sectors of circles (previous lesson)
- The tenth installment of a 23-part module
Pros
- Problem set includes a progression of difficulty
- Teachers will appreciate the indication of mathematical practices
- Resource includes answer key to all guiding questions, as well as worksheets
Cons
- None