Learn about the geometry of circles with Peter Weatherall’s Circle Song.
In this lesson, students use the formula for the area of a circle to calculate how much of a pizza is actually pizza, and how much is crust.
Using a circle that has been divided into congruent sectors, students will discover the area formula by using their knowledge of parallelograms.
“Estimating Areas” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Relating Area to Circumference” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Stained-Glass Windows” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Applying Area of Circles” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Exploring Circles” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Applying Circumference” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Distinguishing Circumference and Area” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Circumference and Wheels” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
“Exploring the Area of a Circle” from IM Grade 7 by Open Up Resources and Illustrative Mathematics.
