In this collaborative activity celebrating Pi Day, students work with the circle formulas to find area, circumference, radius and diameter. Easy to recreate!

Physicists have uncovered a hidden connection between a famous mathematical formula for pi, everyone’s favorite irrational number, and quantum mechanics. At least one mathematician has pronounced the discovery “a cunning piece of magic.

To celebrate Pi Day, I created three fun activities that let kids get artsy while not losing a day of learning. That one above is a Pi Day Pennant for middle and high school students with area and circumference problems and fun pi facts on each pennant. Some of the circle problems ask students to combine their understanding of the two circle formulas by finding area given circumference, for example. A fun challenge!

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