Common Core Grade Level for this Lesson Plan:
4.MD Geometric measurement: understand concepts of angle and measure angles.
7G Solve real-life and mathematical problems involving angle measure, area, surface area, and volume.
HSG.C Find arc lengths and areas of sectors of circles.
B5 Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius
Grades 4, 7, High School