What is Pi Day?
Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter "π") is the symbol used in mathematics to represent a constant - the ratio of the circumference of a circle to its diameter - which is approximately 3.14159.
Pi has been calculated to over one trillion digits beyond its decimal point. As an irrational and transcendental number, it will continue infinitely without repetition or pattern. While only a handful of digits are needed for typical calculations, Pi's infinite nature makes it a fun challenge to memorize, and to computationally calculate more and more digits.
Try one of
- Memorize pi and participate in our pi contest
- Use the Buffon's Needle Simulator to calculate the value of pi
- Pilish is a method of writing. The most important rule of Pilish is that each word's length has to match a place in pi. So, the first word must have 3 letters, the next word must have only 1, the next 4, the next 1, then 5, and so on.
- Read this interview with pi expert, David Blatner. After reading this interview, pretend that you are a journalist with the incredible opportunity to interview π. Write three questions, then write the answers you think π would give.
- Use this pi detector to test the ratio against as many circles as you can.
- Feeling silly? Try singing some of these Pi Day Carols