Pi Day - Wear Your Math!

Pi Day is the day to celebrate math--its wonders and beauty!

The Greek letter Pi stands for a number that is infinite, and can be rounded off to 3.14--and so is celebrated on 3/14 (March 14th).  This year is special, because the first 10 digits of Pi will click into place on 3-14-15 at 9:26:53 

 

3.141592653...

 

The number Pi can be used to find the measurements of a circle.  The circumference of a circle equals Pi multiplied by the diameter of the circle. 

 

In other words, the circumference is a little more than 3X the diameter.  

 

Try it!  Cut a string that's the length of the diameter (straight across the middle of a circle), and three of those (plus a little more--3.14...) go once around the edge.

 
There's more: you can find the area of a circle using Pi.  The area is Pi multiplied by the radius squared.

A = Pi X R2
A = Pi X R X R

It works every time, with every circle.  How cool is that?  No doubt about it, math is fascinating and beautiful.

 

I created a Pi Day Medallion so kids can wear their love of math stylishly.  It's so chic and geeky--in the best sense--that kids of all ages can wear it proudly.