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This Law of Sines lesson plan also includes:
Prove the Law of Sines two ways. The ninth segment in a series of 16 introduces the Law of Sines to help the class find lengths of sides in oblique triangles. Pupils develop a proof of the Law of Sines by drawing an altitude and a second proof using properties of circumscribed circles.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Lead a discussion on what students need to determine a missing side in a triangle
Classroom Considerations
- Pupils should know congruence theorems
- The class should be familiar with the trigonometric ratios
Pros
- The figures use colors to highlight the different triangles formed
- The scaffolding suggests ways to assist those that struggle
Cons
- None