*We have 23 awesome activities for Pi Day, pi day resources for lessons, and pi day celebration ideas! Celebrate this fun holiday with our unique ideas for Pi Day (beyond just pi pie)! It’s a great way to learn math AND make math fun for kids! *

Before we get to the activities for Pi Day and pi day fun, let’s talk about what does Pi Day mean / Pi Day significance, Pi Day history, and other pi facts.

## Pi Day Facts

### Which day is known as Pi Day?

Pi Day is celebrate March 14th every year because it is the same as the date 3.14, which are the first three digits of the Greek letter pi.

### Why is Pi Day celebrated on March 14?

Pi Day is celebrated on March 14th because it matches the format of the mathematical constant of pi, with is 3.14, or the he ratio of the circumference of a circle to its diameter. The day of March 14 is also 3/14, which are the first three digits of pi.

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### How is Pi Day celebrated?

To celebrate Pi Day you can:

- Learn more about pi
- Eat Pi Day pie
- Wear fun Pi Day t shirts
- Decorate for Pi Day
- Make Pi Day treats
- Order (or make) a pizza pi
- Do some Pi Day trivia
- Have a circular parade
- Do some math

**DON’T MISS OUR FULL LIST OF ACTIVITIES FOR PI DAY BELOW! KEEP SCROLLING!**

### What Pi Day Means

Pi Day is the celebration of the mathematical constant of pi, which is 3.14159265359.

### Pi Day Symbol

The pi day 3.14 symbol is the lowercase Greek letter π.

### Why is Pi Day celebrated?

Pi Day gives mathematicians and math nerds a way to celebrate numbers every year! It celebrates the mathematical constant of pi (π). It’s also a fun way to get kids interested in math. So have fun with Pi Day celebrations!

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### When was Pi Day first celebrated?

What year was pi day first celebrated? The first Pi Day was celebrated in 1988 by a physicist named Larry Shaw. March 14th (3/14) was chosen because it is the first digits of 3.14. It also happens to be Albert Einstein’s birthday! Pi Day became an official holiday in 1999.

According to History.com:

“The first Pi Day celebration took place at the Exploratorium (Shaw’s place of work), a San Francisco-based interactive science museum, and featured a circular parade and the eating of fruit pies.

The festivities have gotten larger each year, and now include webcasts and a virtual party in Second Life (an online virtual world).

It wasn’t until 2009, however, that it became an official national holiday when the U.S. House of Representatives passed legislation.”

### Who created Pi?

The the Greek letter Pi, symbol *π, *was first used by William Jones, a Welsh mathematician in the early 1700s. It went on to become popular from the use by Leonhard Euler, a Swiss mathematician, physicist, astronomer, and engineer, and also Georges Buffon, a French mathematician.

According to Exploratorium.edu:

“Mathematicians began using the Greek letterπin the 1700s.

Introduced by William Jones in 1706, use of the symbol was popularized by Leonhard Euler, who adopted it in 1737.

An eighteenth-century French mathematician named Georges Buffon devised a way to calculateπbased on probability.”

OK!

Enough of those Pi Day facts, right?

Let’s get right to the activities for Pi Day!

## 23 ACTIVITIES FOR PI DAY

Enjoy these Pi Day activities and Pi Day ideas.

Let us know what you think!

- Watch a Pi Day video to learn about pi
- Search for Pi Day events at local libraries and businesses and participate
- Enjoy some Pi Day jokes
- Dress up for Pi Day (here’s our favorite of the Pi Day shirt ideas)
- Look for Pi Day pizza deals
*(Get it? Pizza Pi Day!)*from your local pizzerias! - Make a Pi Day pie shaped like a pi (or other Pi Day desserts)
- Host a pie Pi Day bake off (or Pi pie decorating competition)
- Host a Pi Day party (Get Pi Day food ideas and Pi Day recipes that’s not just pie — perfect for Pi Day potluck ideas, too!)
- Sing a Pi Day song
- Complete some Pi Day projects
- Have a Pi Day scavenger hunt
- Do a Pi Day challenge from NASA
- Play Pi Day games
- Grab some Pi Day worksheets
- Get some Pi Day trivia
- Do a Pi Day word search
- Do some Pi Day math activities
- Take a Pi Day quiz
- Make Pi Day crafts
- Create Pi Day art
- Complete a circumference of a circle lesson plan
- Color some Pi Day coloring sheets
- Do some Pi Day STEM activities

**What’s your favorite pi day activity?**