Pi Day (March 14)

In this interactive game, learn how to calculate diameter, radius and circumference, plus pi and its relationship to circle area and circumference. There are quiz-show questions to collect targets, a mini-game and a comic video about pi and pie.

This 8-minute video explains the mathematics of circles, circumference and pi.

This video explores how Pi and the Fibonacci sequence are frequently found in the natural world, such as in the number of petals on flowers, the number of spirals on a pine cone and a meandering river.

In this engaging five minute video, 9-year-old Chirag Singh confesses his irrational love for Pi — and not the kind you eat. He describes pi and our history of understanding and calculating pi.

This video from MashUp Math contains some fun facts about Pi Day, March 14th.