Playing "A Round" with Pi: Cards for Circumference, Perimeter, Area
This bundle includes four printable 36-card sets involving area and circumference (or perimeter) of circles and composite shapes (CCSS 7.G.4). Just print 5 sheets per group on plain paper, and have students cut cards, match them, & play games.
BONUS BUNDLE: Grade 7 Multi-Match Math Games for Common Core
This bundle includes 14 printable sets of 36 cards for Grade 7 math along with game instructions. Topics include integers, expressions, area and perimeters of circles, rates, probability, and more. Just print on plain paper, cut, and play!
Use graph paper to demonstrate the ratio of PI for both Circumference and Area. Refer to the demonstration of Circumference performed for you in the last Math Antics Video, What is PI? Use that demonstration to come up with your own for the ratio of PI when calculating the Area of a circle.