Area of a Sector

This Area of a Sector activity & project also includes:

Young geometers derive the formula for the area of a sector of a circle. As they work through a series of problems, they find the area of one piece of a pizza if it is divided into eight equal pieces. Learners then investigate how changing the central angle of a piece of pizza affects the area of the piece, then generalize their results to find the area of a sector of any given central angle measure.  

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CCSS: Designed

  • Exploration is presented on an easy-to-use worksheet
  • Includes a good review of vocabulary and formula for area of a circle
  • Contains good discussion questions to facilitate exploration
  • Links to UDL checklist for teacher reference

  • Does not provide practice problems to reinforce concept, teacher must provide them
  • Some math symbols in formulas may not display on document in some browsers, but can easily be penciled in
Common Core