Pi Day: A Circle's Secret Number!

Imagine a perfect circle, like a pizza or a hula hoop. There's a secret number that tells us how its edge (circumference) relates to its middle (diameter). That number is called Pi, and it looks like this: π! It's a super long number that goes on forever without repeating, starting with 3.14. We celebrate this amazing number every year on March 14th because it starts with 3, 1, and 4!

Long, long ago, smart people noticed that no matter how big or small a circle was, the distance around it was always a little more than three times the distance across its middle. They started measuring and calculating, and eventually, they figured out this special number, Pi! The first big celebration for Pi Day happened in 1988 at a science museum in San Francisco.

It was started by a scientist named Larry Shaw.

This is the yummiest part! Because the word 'Pi' sounds just like 'pie,' people love to eat delicious pies on March 14th. You can eat apple pie, cherry pie, or any pie you like! It's a fun way to remember the number. Some people even try to say as many of Pi's digits as they can, like a super-long tongue twister!

Pi Day isn't just a fun party; it's so important that even the grown-ups in charge think so! In 2009, the people in the United States government officially supported Pi Day. And guess what? The whole world agrees! In 2019, a big international group called UNESCO said that Pi Day is the International Day of Mathematics. So, on March 14th, kids and grown-ups all over the planet celebrate math!