Circles and Arc Lengths

Discuss all things round and round. Pupils review finding area and the circumference of circles and use them to solve problems. Next, they learn about central angles and their relationships to measures of arcs. Learners then find out how to calculate arc lengths and finish the lesson by practicing the skills involving circles.

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CCSS: Adaptable
Instructional Ideas
  • Create a graphic organizer for the class to record all the information about circles
Classroom Considerations
  • Lesson four in a six-part Area of Polygons unit
  • Assumes knowledge of solving simple quadratic equations
Pros
  • Contains an extra worksheet for those needing additional practice
  • Highlights sections of the circle in different colors to show the portion referenced in the problem
Cons
  • None