Area of a Triangle

Triangles are not all created the same. The instructor shows how to find the area of different types of triangles using the formula. She also includes an example requiring coordinate geometry.

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CCSS: Adaptable
Instructional Ideas

  • Ask learners to record examples in their notes for reference
  • Have pupils record important formulas on the cover of their notebooks for quick reference
Classroom Considerations

  • Builds on previous lessons in a 40-part series 
Pros

  • Spends time developing an understanding of the height of a triangle
  • Instruction is clear and easy to follow
Cons

  • Video is unexciting in its presentation, so viewers might get bored
Common Core