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This Triangle Area: No Height? Use the Sine lesson plan also includes:
No height? No problem! Learners use their knowledge and a little help from GeoGebra to develop the Law of Sines formula. The Law of Sines helps to determine the height of triangles to calculate the area.
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CCSS:
Designed
Concepts
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Instructional Ideas
- After completing the activity, ask individuals to explain to a partner the proof of the Law of Sines
Classroom Considerations
- Ensure a familiarity with calculating the area of a triangle and trigonometric ratios
- Requires individual laptops with Internet to access GeoGebra
Pros
- Includes both a warm-up and closing exercise
- Allows pupils to experiment with different strategies to discover the formula
Cons
- None