# Pi Day is March 14

## Pi Day! Not pie. Pi!

Pi Day is observed on March 14 (3/14) in honor of the mathematical constant pi, frequently represented as 3.14. While most people learn about pi in school, some especially enthusiastic fans celebrate the constant with Pi Day festivities.

Pi Day coincides with the birthdate of Albert Einstein, which provides additional reason to celebrate.

Read on to learn more about pi and what kind of Pi Day activities it inspires.

*image from PiDay.org*

## What is Pi Day About?

Here's a very helpful video from Discovery News. It explains what Pi is, why it's important, and why people celebrate Pi Day.

Helpful introduction to Pi Day!

## Top Ten Ways to Celebrate Pi Day

I've done quite a bit of research and reading about how people celebrate Pi Day. Here are my ten favorite Pi Day observances and activities. If you have suggestions, please leave a comment below! I'm always looking for more great ideas!

- Eat some Pie. If you're having a party, serve 3.14 pies.
- Take a
*pi*photo. Find 2 friends and lie down in the shape of*pi*. Take a photo and post it! - Walk or run
*pi*. It can be 3.14 miles, kilometers, blocks or laps. - Make
*pi*-shaped food. Use a cookie cutter or food mold for cookies or Jell-o. - Wear
*pi*. Buy or make your own*pi*-emblazoned shirt. - Memorize some
*pi*. Start with 3.14 and go as far as you want! - Tell some
*pi*jokes. Here's one to get you started.Q: What do you get if you divide the circumference of a bowl of ice cream by its diameter?

A: Pi a la mode.

- Convert numbers into units of
*pi*. For example, if you're 31 years old, say you're 10*pi*. - Wish people "Happy Pi Day!" Especially people who don't know what you're talking about. Help get the word out.
- Countdown to
*pi*minute at 1:59 on March 14. It's 3/14 1:59. (3.14159) This is the quickest, easiest and least time-consuming observation of Pi Day.

## Pi Day Accessories

Make Pi Day even more *pi*-tacular with fun cookie cutters and accessories.

## How long is Pi?

### hint: you'll never guess correctly

*Pi* has been calculated to **over one trillion digits** beyond its decimal point, although only 39 digits past the decimal are necessary to calculate the spherical volume of the universe. **As an irrational and transcendental number, pi will continue infinitely without repetition or pattern**.

*Pi*'s infinite nature makes it a super challenge to memorize, if you don't mind knowing you'll never be able to learn all of the digits.

Want to get started? I don't have room to list an inifinite number of digits. So, here are 50 digits of *pi*. Enjoy!

3.14159265358979323846264338327950288419716939937510

*source: Digits of pi*

## Why is pi so lonely?

## Did you know...

3.14% of sailors are pirates.

## Pi Day Party Essentials

Whether you're a party of one or throwing a big Pi Day Palooza, you'll need some supplies to help set the celebratory mood. Maybe these will help.

Add some colorful Pi to your walls. Great as a party decoration or for everyday memorization.

This peel and stick Pi will look great at your Pi Day party!

This nerdy math clock is perfect for any day, but especially on Pi Day!

## Pi Day Pics - memes, photos, and other fun visuals

Click thumbnail to view full-size## Pi Day Activities and Events

Believe it or not, Pi Day events are becoming more and more popular. Check this growing list to see if there's one near you, or get some ideas for starting your own Pi Day party! Have one to add to the list? Leave me a comment below!

- Pi Day

The objective of this web site is to convince the world that mathematics is fun, and capitalize on the attention mathematicians’ favorite number, Pi, gets on Pi Day. By promoting cool Pi-related things from around the web, we are able to demonstrate - Pi Day Princeton

Einstein lived in Princeton, New Jersey for over 20 years, so on Pi Day the heart of Princeton celebrates his birthday and all the genius residents of our famous Ivy League town with a ton of events! - Happy Pi Day! March 14, 2014

Celebrating Pi Day with fun facts, activities & party ideas. - How to Celebrate Pi Day: 8 Steps (with Pictures) - wikiHow

How to Celebrate Pi Day. Pi is a mathematical constant that is the ratio of a circle's circumference to its diameter, and it is also one of the most revered mathematical constants in the known world.http://www.piday.org/learn-about-pi/ Pi... - Pi Day Pinata!

How to make a Pi Pinata! - Pi Day Cards, Free Pi Day eCards, Greeting Cards | 123 Greetings

Pi day is the perfect time to celebrate something that's as infinite as the value of pi, namely, your love for all those you care about. Reach out to them with our ecards and let the words speak out your feelings. - Pi-Dye T-Shirts - The Place for Pi and Math T-shirts and Other Gifts

Pi and math t-shirts, gifts, clocks, and mugs for Pi Day Assemblies, Math Clubs, Math Awards, Gifts for Math Teachers, or individual purchase. - Pi Day: pi transformed into incredible art – in pictures | Science | theguardian.com

The number 3.14159 … as you have never seen it before. Striking computer-generated images of the most famous number in maths

## Pi Day Songs

These songs are full of *pi* puns, which will make you giggle and/or groan. Enjoy!

## Did you know...

In Alaska, where it gets very cold, pi is only 3.00. As you know, everything shrinks in the cold. They call it Eskimo pi.

## Pi or Cake?

## Pi Day Teacher Resources

Looking for printables and activities to incorporate into your Pi Day lesson plan? Try some of these sites for teacher resources.

- Pi Day Theme Unit - Printables and Worksheets

Pi DayTheme March 14 - History of Pi (Grades 5-8) March 14 - Celebrating Pi Day (Grades 5-8) What Is Pi? (Grades 5-8)Spanish - Pi - EnchantedLearning.com

Pi, 3.1416..., an explanation and printable worksheets. - Pi Day Worksheets

Use these worksheets and activities to teach your students all about the number pi. - Math Forum: T2T FAQ: Pi Day

Do you know of activities to use for a Pi Day, March 14 (3.14) celebration? - Pi Day

Pi Day is March 14. Celebrate Pi Day at Math Goodies by exploring the history and meaning of this mathematical constant. - Pi Day: Pi Activities & Links | Exploratorium

A Brief History of Pi Pi in Second Life Cutting π : Carefully wrap string around the circumference of your circular object. Cut the string when it is exactly the same... - Exploring Pi | Scholastic.com

Celebrate the most useful irrational number with these fun math and geometry activities. - 12 Best Pi Day Ideas for March 14th {3.14} - Tip Junkie

Pi Day is also a fun excuse for a new activity and tradition with your kids! Here are 12 Pi Day ideas which include free printables, recipes, and fun activities for kids to help celebrate Pi Day on 3.14, March 14th! - Great Pi Day Activities for Teachers - Pi Day

Here are some Pi Day Activity suggestions from 2008 submitted by teachers, students & every day people. - TeachPi.org - Lessons

A one-stop Pi Day shop for teachers and number lovers.

## Epic Pi Day in 2015

An extra-special Pi Day is coming up in 2015! On March 14, 2015 at 9:27, the date and time will look like the numerical representation of pi to seven digits past the decimal point: 3.1415927

Put it on your calendar now, so you don't miss this epic Pi Day!

Last updated on March 16, 2014

## Follow (0)Are you a Pi Day fan? How do you celebrate? 52 comments

Interesting this is the first time I have heard of Pi day. Sorry I don't celebrate, but at least I learnt something new today by reading this page Thanks.

It's really a fun and cute lenses, very happy to see them!

lol! funny - congratulations on LOTD - Love how Pi shrinks in Alaska lol!

reall nice and fun lens!

shared it.

I had no Idea that Pi was celebrated!!! Where have I been?? Very nice, Thanks and Congratulations on LOTD!!!

This is interesting, I never knew that a day is celebrated in honor of Pi. Thanks for sharing!

wonder pie

Just stopped back by to congratulate you on LofT! That is wonderful, and still another reason to celebrate today. Love your lens!

Congratulations on your LotD! I have never understood Pi, and even listening to the video, I'm even more confused. I cannot wrap my head around how anyone could have come up with this to begin with. :)

No, but after this lens I think I'm missing out on a good celebration! congratulations on LoTD! This is a great lens!

Fun! I love the sailors/pirates statistic. Guess I'd better celebrate, probably with a pie. Congratulations on your very entertaining and informative Lens of the Day!

An excellent reason to celebrate. Maybe I'll bake a birthday Pi for Albert. Congrats on LotD!

Congratulations on LOTD! Very interesting, really never thought about Pi being a special day...and now I have another celebrating day to honor.

Happy Pi Day! Congratulations on LotD!

Not really but it is a fascinating number. Did you know that you can prove a straight line is a circle? This is done by mapping all the tangents to a circle and differentiating to the nth degree where n tends to infinity. The resulting graph can be shown to be continuous and hence +infinity is equal to -infinity at which point the straight line meets itself and it is therefore an infinite circle. The Universe can be plotted in the same way and is therefore an infinite globe.

This weird mathematical fact is not explainable in our 4d world and could not be done had we not discovered Pi. No wonder it is called an irrational number! Well done on the LOTD!

I'm going to find a way to include pi in every sentence today.

Well I'm a fan of pie, does that count? LOL Now that I know about it , I'm a fan of Pi Day. I find mathematics fascinating especially how it underpins the structure of the Universe.

Great lens! Wasn't aware of Pi Day but am a fan now!

I never knew there was a Pi Day.

I totally forgot it was Pi Day! Duh! Thanks for reminding me!

We celebrate this every year where I work. It's a great day for trying all kinds of strange kinds of pie.

My co-workers were surprised and a little confused but very happy when I brought coconut cream pie (decorated with a chocolate chip pi) to work to celebrate!

sounds like such a lot of fun

I barely passed geometry, no way I'm celebrating. Seriously, this was a fun lens. Congratulations on getting LotD!

I had a lot of fun telling students it was pi day Congratulations on lens of the day.

10 trillion? I had no idea. It opened my mind. You made my day. Thank you!

I came across you lens for Pi day on Pi day. So, I thought it apt to take a look. Fun lens. I also made sure to wish all of my colleagues a happy Pi day.

Merrci7 months ago from Oregon's Southern Coast Level 7 CommenterFun and cute and a big congratulations for your 100th! That's very exciting and still another cause to celebrate!