March 14 is Pi (π) Day, the annual celebration of a never-ending number—and Albert Einstein’s birthday, and also a great day to celebrate round foods that sound like Pi (aka pie!)

Sweet and savory pies are tasty, and pizza pie is also an option! Ready to celebrate Pi Day?

Keep reading to learn:

- 1- More about the very interesting number 3.14, aka pi
- 2- The first Pi Day
- 3- Ways to celebrate Pi day.

Let’s get started!

## What is Pi, and why does it get it’s own day?

Pi is a mathematical constant, which means it says the same no matter what. The usual stopping place for pi is at 3.14, but pi is a never ending number! Amazing right?! Pi is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as are commonly used to approximate it. This also means that the decimal never ends, and it never enters a permanently repeating pattern. There are even contests to see who can correctly recite the number correctly farther out than anyone else… That’s a lot of numbers!

Pi has been studied for a really long time… the Ancient Greek mathematician Archimedes even figured out a way to find pi, and he was pretty accurate. Once Calculus was invented, it was easier for mathematicians to calculate pi, and now even supercomputers are being used to see if they can find the last digit… they haven’t found it yet, and computers have figured out trillions of numbers past 3.14.

## When was the first Pi Day?

Pi Day is observed on March 14 because 3, 1, and 4 are the first three significant figures of *π*.. It was founded in 1988 by Larry Shaw, an employee of the San Francisco, California science museum, the Exploratorium. Ever since then, the celebration of pi day has grown into a national, and probably even global, celebration.

## How do you celebrate Pi Day?

There are lots of ways to celebrate Pi Day! You can study the math, or you can eat things that are a circle shape like pie, pizza, or even ravioli, because they all will still equal 3.14 if you divide the circumference by the diameter.

What kinds of pizza and pie can you eat on Pi Day? Any kind you like!

Captain Create can get you started with dough recipes for both pie and pizza, and then it is up to you to CREATE your own fillings and toppings! Enjoy!