What is Pi?

Discovery at its best:

Most of us don't know what Pi is 

except that we know that today is Pi Day.

So, equipped with a string, a bunch of circles and a calculator, 

we go on a Math Adventure to discover "What is Pi?"

First we measure around the circles with a piece of string (the perimeter):

Then we measure how long the string is:

Then we measure across the circles (the diameter):

We divide the perimeter by the diameter:

Since most of us have not officially done division, especially long division, 

we use a calculator to do the math.

We compare our findings and discover that they are very close to each other!

We learn that Pi is a number rounded to 3.14--in other words, today's date!

One million digits of Pi

We enjoy some "Pi".