Lesson Plan: Arc Lengths | Nagwa Lesson Plan: Arc Lengths | Nagwa

Lesson Plan: Arc Lengths Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find the arc length and the perimeter of a circular sector and solve problems including real-life situations.


Students will be able to

  • recognize the formulas for calculating arc length when the measure of the arc is given in degrees or radians,
  • calculate the length of a sector’s arc,
  • calculate the perimeter of a sector,
  • calculate the radius of a sector when given the measure of the arc and the length of the arc (or the perimeter).


Students should already be familiar with

  • radians.


Students will not cover

  • the areas of circular sectors,
  • circular segments.

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