Arc Lengths and Sector Areas

Sometimes the whole circle isn't necessary for our purposes. Learners identify ways to determine the arc length and sector areas of circles. An activity that requires measuring cans helps review the concepts of circumference and area.

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CCSS: Designed
Instructional Ideas

  • Have scholars brainstorm situations where arc length and sector areas would be useful in a journal entry
Classroom Considerations

  • Needed materials for the lesson include cans of various sizes
  • Pupils should have prior experience calculating the area and circumference of circles

  • Includes very detailed, step-by-step directions for conducting the lesson
  • Lists links to some outside resources for further information

  • None
Common Core