Lesson Plan: Arc Lengths and Sectors: Degrees Mathematics
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find the arc length and the area of a sector given the angle measure in degrees.
Objectives
Students will be able to
- recognize the formulas for calculating arc length when the measure of the arc is given in degrees,
- 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),
- recognize the formulas for calculating the area of a sector when the measure of the arc is given in degrees,
- calculate the area of a sector,
- solve related problems involving areas and perimeters of sectors.
Prerequisites
Students should already be familiar with
- finding the circumference of a circle,
- finding the area of a circle.
Exclusions
Students will not cover
- radians,
- circular segments.
