Celebrate Pi Day with this bingo game that reviews circle formulas. Students find area, circumference, radius, and diameter while having fun. Practice solving for area, circumference, diameter, or radius with this fun and interactive bingo game. If you're looking for an engaging Pi Day Activity for your math class, this is it! This google slides presentation includes 73 spring themed slides with problems and solutions involving circles. Included are also printable bingo cards and "Show Your Wo