Pi Day Resources

Pi Day is approaching!  Here are some resources to help you out...even though I think we should be celebrating the ratio of a circle's circumference to its radius or tau.  Why tau?  Well most people will tell you that a circle's circumference is 2πr and that the area of a circle is πr².  Notice how both formulas refer to the circle's radius?  Also if we celebrated tau, then we could eat twice the pie!  I rest my case.

• PiDay.org
• Teach Pi
• Pi Day Princeton
• Pi Infographic
• More to come...

Visualizing Pi infographic