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This Area and Perimeter of Triangles: Lesson instructional video also includes:
Go from a parallelogram to a triangle. A segment of an extensive playlist on basic geometry shows the derivation of the formula for the area of a triangle. The resource works examples that require finding a missing side or height to calculate the area.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Lead a discussion on finding heights to different bases in a triangle
- Review the connection between multiplying by a unit fraction and division
Classroom Considerations
- Assumes individuals know the Pythagorean Theorem
- This video is hosted on YouTube
Pros
- Uses colors to highlight the triangles of interest
- Includes a link to more resources on triangles' areas and perimeters
Cons
- None