This mini-lesson explores the area of a circle. Provides a definition, examples, and practice questions with answers.

Seventh graders will compare the formula for the area of a regular polygon to discover the formula for the area of a circle.

Explains formulas for areas of sectors of circles and lengths of arcs. Demonstrates how to use the formulas in each of degrees and radians.

This site from the Rice University includes a fill-in-the-blank lesson on the definition of circles, as Pythagoras described.

In this instructional activity students will be engaged in an interactive online practice session using area and perimeter. Students will have to use critical thinking skills in order to unlock gates and learn more about the cups in the...