Instructional Video

Sectors and Segments

Curated and Reviewed by Lesson Planet

It's a piece of pizza! Pupils learn about a sector of a circle as a slice of the circle and determine how to find its area. Scholars continue to find out how to calculate the segment of a circle based on the sector's area. At the end, they practice their skills by finding areas of sectors and segments in several problems.

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CCSS: Adaptable
Instructional Ideas
  • Devote time to be sure individuals understand how to calculate the area of a triangle using the measure of an angle and the length of a side
Classroom Considerations
  • Fits as the fifth lesson in a six-part unit on area
  • Assumes the class has knowledge of trigonometric ratios
  • This video is hosted on YouTube
Pros
  • Provides application and SAT prep type problems
  • Includes a detailed answer key showing the work required to arrive at the solution
Cons
  • None