Celebrate Pi Day - March 14th
Pi, approximately 3.14159, is the mysterious mathematical constant (number) that represents the ratio of any circle's circumference to its diameter.
Pi has its day, appropriately, on March 14 (3/14). Often a Pi Day celebration will have an extra special event set for pi minute (at 1:59pm). In the UK, Pi Approximation Day is often celebrated on July 22 (22/7) as 22 divided by 7 is an approximation for pi.
This day brings more fun to math classes around the world then anything else (second only to Math League).
The Pi Song
PiDay.org
- Pi Day - The official web site for Pi Day, March 14th
- Piday.org is the official web site for March 14th (3.14). Learn about pi, shop for pi t-shirts, share ideas about how to celebrate pi & pi day, enjoy pi-related multimedia, get one million digits of pi, and send pi day eCards. 3.141592653589793238462...
(Pi Day 2010 is March 14, 2010)
How Much Pi Do You Know?
Amazing Books about Pi
Door Prize!
At your Pi Day party check your guests birthdays on Pi Search. The birthday starting closest to the beginning of pi wins!
Fun Ways to Estimate Pi
- How to Calculate Pi by Throwing Frozen Hot Dogs
- wikiHow article about How to Calculate Pi by Throwing Frozen Hot Dogs.
- How to Calculate Pi by Firing Cannonballs
- wikiHow article about How to Calculate Pi by Firing Cannonballs.
- How to Calculate Pi by measuring round items
- Worksheet for calculating Pi by measuring round items.
Pi-rate's Love Pi
Pi-rate
PI rate Dark T-Shirt
Price: 26.99 
PI rate Women's V-Neck Dark T-Shirt
Price: 27.99
Send a Free Pi Day eCard
- Pi Day Grettings from 123Greetings
- 8 Free Greeting Cards
- Free Pi Day eCard from BlueMountain.com
- 1 Free eCard
- 1 Free Greeting form PiDay.org
- 1 Free Pi Day Greeting
About Pi Day
The first Pi Day celebration was held at the San Francisco Exploratorium in 1988, with staff and public marching around one of its circular spaces, and then consuming fruit pies; the museum has since added pizza pies to its Pi Day menu. The founder of Pi Day, the "Prince of Pi", is Larry Shaw, COMMENTS & CURIOSITIES: Infinitely irrational Pi Day Accessed on 2007-03-29. now retired from the Exploratorium, but still helping out with the celebrations. They have also recently added the first Pi Day celebrations in Second Life.
The Massachusetts Institute of Technology often mails out its acceptance letters to be delivered to prospective students on Pi Day.
Some also celebrate Pi Approximation Day in addition to Pi Day, which can fall on any of several dates:
*July 22: 22/7 in nearly all date formats, an ancient approximation of pi
*November 10: The 314th day of the year (November 9 in leap years)
*December 21, 1:13 p.m.: The 355th day of the year (December 20 in leap years), celebrated at 1:13 for the Chinese approximation 355/113
On March 14, 2004, Daniel Tammet recited from memory 22514 decimal digits of pi. David Letterman show 27.04.2005
March 14, 1916 (3/14/16 in American date format) is the closest approximation of pi in the last century.
read the rest of this article on wikipedia
Pi To The 50th Decimal Silk Tie
by Wild Ties
PI To The 50th Decimal Tie by Wild Ties - Green Silk
Amazon Price: $24.95 (as of 07/12/2009)
Not for the wanna-bes or the imitators, this necktie is for the true and the proud. This tie is for the nerds. Featured within this grand necktie is the great and almighty symbol of Pi. However, it is behind this symbol where the real intellect lays. It is here that pi is calculated in all its glory to the fiftieth decimal point. Your math teacher may know pi to the fifth decimal and you may even have a friend who knows it to the twelfth, but you are sure to impress them all when you have pi to the fiftieth decimal point. With pi it is all about respect and if you are sporting anything below 25 you may as well go home. And you don't want to go home, so sport your pride and receive the respect you deserve. Your time is now.
More Pi Ties
(and an amazing pair of Pi cufflinks)
Sir Cumference and the Dragon of Pi
by Cindy Neuschwander
Sir Cumference and the Dragon of Pi (A Math Adventure)
Amazon Price: $11.53 (as of 07/12/2009)
When Sir Cumference drinks a potion which turns him into a dragon, his son Radius searches for the magic number known as pi which will restore him to his former shape.
Pi Day Activities
Secant! tangent! cosine! sine! 3.14159! Goooo Pi Day!
- Math Forum: Pi Necklace
- Making a Pi Necklace by Diana Funke
- The Pi-Search Page
- The Pi-Search - Search For a string of digits within the number pi.
- Activities @ TeachPi.org
- Great list of activity ideas for celebrating Pi Day.
Lose Yourself in the Digits
Pi Day Song
Pi Day Song (Lose Yourself in the Digits)
Based on Eminem's "Lose Yourself" and provided by teachpi.org, recorded by "Pi Diddy", this is a video made by a 7th grade math teacher for students in the ghetto of Louisville, KY
Runtime: 4:31
69014 views
10 Comments:
Pi Day Links
- The Exploratorium's 2008 20th Annual Pi Day Celebration
- Featuring What is Pi Day? Pi Day Activity Schedule, Pi Day in Second Life, A Short History of Pi, Discovering Pi, Cutting Pi Pi-Ku (haiku), Pi Limericks, ...
- Math Forum: Ask Dr. Math FAQ: About Pi
- What is Pi? Who first used Pi? How do you find it? What is it for? How many digits is it?
Pi Day Songs
Happy Pi Day
(to tune "Happy Birthday")
Happy Pi Day to you,
Happy Pi Day to you,
Happy Pi Day, Three Point One Four.
Happy Pi Day to you.
We Wish You a Happy Pi Day
(to tune "We Wish You a Merry Christmas")
We wish you a happy Pi Day
We wish you a happy Pi Day
We wish you a happy Pi Day
Because math is fun
Pi digits for you
We cannot ignore
Pi digits never ending
Start with three point one four!
More Pi Day Songs
Albert Einstein
(Photo of Albert Einstein Impersonating Gene Simmons from Kiss)
Pi Day, March 14,
also happens to be
Albert Einstein's
birthday!
What to Eat at a Pi Day Party?
- Pie!
Any pie will do, but if you can put the symbol pi into the crust of say an apple or cherry pi it is even more festive. - Pizza!
A pizza pie is a great add to a Pi Day party. To go all out, put pepperoni on in the shape of pi. - Cookies or cupcakes decorated with Pi are great ideas
- Coffee, pie and donuts
A mnemonic for C = pi*d is Coffee Pie Donuts - Anything else round - It would be best to have all of your refreshments be round to keep the theme going. Donuts, cheerios, M&Ms, ...
More Pi Day Activity Ideas
- Make a paper chain out of 10 different colored papers. Choose one color to correspond with each digit, and see how long you can make it.
- Write your own Pi-ku.
- Pi Rhythm - Assign each of 10 students a digit. Have the digits of pi visible to everyone. Have students pat there legs in a steady rhythm. Have the students call out their digit when it comes up in the rhythm. Whenever a student messes up, they get "dinged". The person with the lease "dings" after a set amount of time wins.
- Compose pi nursery rhymes.
Do You Celebrate Pi Day?
Pi Items
Winged Pi Organic Cotton Tee
Price: 27.99
Peace, Love, and Pi Bumper Sticker
Price: 5.49
American Pi Women's T-Shirt
Price: 23.99
Pi Quotes
- "Love is like pi - natural, irrational, and very important." -- Lisa Hoffman
- "Programming graphics in X is like finding the square root of PI using Roman numerals" --Henry Spencer
- "So here we have pi squared, which an engineer would call 10." --Frank King
- "It helps us understand what pi is, not just food." --Robert Toth
- "Pi is not merely the ubiquitous factor in high school geometry problems; it is stitched across the whole tapestry of mathematics, not just geometry's little corner of it. Pi occupies a key place in trigonometry too. It is intimately related to e, and to imaginary numbers. Pi even shows up in the mathematics of probability." --Robert Kanigel
- "Exploring pi is like exploring the universe" -David Chudnovsky
- "Pi is not just a collection of random digits. Pi is a journey; an experience; unless you try to see the natural poetry that exists in pi, you will find it very difficult to learn" --Antranig Basman
- More Pi Quotes
Pi Art
Have a decorating contest, where everyone decorates a Pi symbol. Let them know that you want more than just simply coloring it, you want it completely decorated, after all, it's Pi Day, and Pi deserves it.
400 Digits of Pi
3.14159265358979323846264338327950288419716939937510582097494459230
7816406286208998628034825342117067982148086513282306647093844609550
5822317253594081284811174502841027019385211055596446229489549303819
6442881097566593344612847564823378678316527120190914564856692346034
8610454326648213393607260249141273724587006606315588174881520920962
829254091715364367892590360011330530548820466521384146951941511609
Mmmm. Do I smell Pi?
Pi de Givenchy by Givenchy for Men 2 Piece Set Includes: 1.7 oz Eau de Toilette Spray + 2.5 oz After Shave Care Alcohol-Free
Amazon Price: (as of 07/12/2009)
p = Pi, the 16th letter of the Greek alphabet is today the symbol of the new masculine fragrance by Givenchy. Explore p, explore the universe. Givenchy offers a mystery beyond infinity. The fragrance combines the rhythms of rosemary, basil and tarrago
About Pi
- Pi chronology
- The time line of Pi.
- Pi history
- The history of Pi.
- Math Forum: Ask Dr. Math FAQ: About Pi
- What is Pi? Who first used Pi? How do you find it? What is it for? How many digits is it?
How do I Type the Symbol Pi?
π
& # 9 6 0 ;
& p i ;
In a word processing program go to Insert-Special Characters
Celebrate Pi in English Class
Pi Day Beyond Math Class
Pi Day Greeting Cards
Winged Pi Greeting Cards (Pk of 10)
Price: 17.99
Cow Pi Greeting Cards (Pk of 10)
Price: 18.99
Happy Pi Day Card (Blank) [10 pk]
Price: 19.99
Pi Day Greeting Cards (Pk of 10)
Price: 19.99
Peace, Love, and Pi Greeting Cards, 6, blank
Price: 20.99
Pi Day News
Fetching RSS feed... please stand byWhich is cooler?
The age old debate. Which is cooler pi or e?
At your Pi Day Party, hold a mathematical debate. Assign a person to speak for pi and another to speak for e.
Which is cooler?
Fetching blurbs now... please stand by
TheAutoSpaLtd says:
Pi is also very feng shui. The arcs in a circle join. In reverse, Pi might be be the true energy. Since it is infinate a spiraling form. As circles have arcs, the arcs of the circle get closer to the centre. But never reaches the centre, since Pi is not finite.
Posted March 30, 2009
Pi Guy says:
Pi, no doubt. After all, how else would we measure the area of circles?
Posted March 13, 2009
jay says:
it makes yu soo happy to right da pie siqn lolz
Posted March 12, 2009
KarateKatGraphics says:
I had a college math prof who said that e "flows in the rivers." Sold! :) But my kids dig pi. Whenever they need to fill in a number on Mad Libs, they choose pi. Works great every time.
Posted April 07, 2009
unique_freak77 says:
Pi rocks, but I'm sorry to say that e is way cooler. It's an actual LETTER! And it's more squiggly.
Posted March 01, 2009
k says:
e, for sure. the natural log occurs everywhere in nature. it's not reserved to circles alone. Oh, but I have to say, the coolest thing I ever learned in college, was e^i*pi=-1. So, I guess they both pretty much rock.
Posted March 01, 2009
spirituality says:
e is definitely cooler - for a mathematician (of sorts) like me... Though I'm ashamed to say that I didn't memorize more than three digits of pi - and haven't gotten beyond two for e. e's harder to explain, but that's part of what makes it cool... (and I love logarithms)
Posted July 23, 2008
Why pi is cooler than e:
Debate points for pi
- the value of pi is bigger
- pi is so special, it only shows under "special symbols" in word processor programs.
- People confuse Euler's Number (e) with Euler's Constant (gamma). There is no confusion with the one and only pi
- e is named after a person, but pi stands for itself
- pi cannot be confused with a hallucinogenic drug
- pi is tasty
- Pi Day rocks! No one cares about e Day.
Why e is cooler than pi:
Debate points for e
- e is easier to spell than pi
- e is on a keyboard, but pi is not
- ln(pi) is a ugly, but ln(e) is 1.
- e is used in calculus while pi is used in baby geometry
- 'e' is the most commonly picked vowel in Wheel of Fortune.
- You don't need to know Greek to be able to use e
- You can't confuse e with a dessert
Pi From Head to Toe
Pi Jokes
Mathematician: Pi r squaredBaker: No! Pie are round, cake cornbread are square!
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A mathematician, a physicist, and an engineer are all given identical rubber balls and told to find the volume. They are given anything they want to measure it, and have all the time they need. The mathematician pulls out a measuring tape and records the circumference. He then divides by two times pi to get the radius, cubes that, multiplies by pi again, and then multiplies by four-thirds and thereby calculates the volume. The physicist gets a bucket of water, places 1.00000 gallons of water in the bucket, drops in the ball, and measures the displacement to six significant figures. And the engineer? He writes down the serial number of the ball, and looks it up.
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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.
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What do you get if you divide the circumference of a jack-o-lantern by its diameter? Pumpkin pi.
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What do you get when you take the moon and divide its circumference by its diameter? Pi in the sky.
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What do you get if you divide the circumference of a bowl of ice cream by its diameter? Pi a'la mode.
Pi in the Sky
Pi (1998)
Starring: Sean Gullette, Mark Margolis
Pi
Amazon Price: $9.99 (as of 07/12/2009)
Patterns exist everywhere: in nature, in science, in religion, in business. Max Cohen (played hauntingly by Sean Gullette) is a mathematician searching for these patterns in everything. Yet, he's not the only one, and everyone from Wall Street investors, looking to break the market, to Hasidic Jews, searching for the 216-digit number that reveals the true name of God, are trying to get their hands on Max. This dark, low-budget film was shot in black and white by director Darren Aronofsky. With eerie music, voice-overs, and overt symbolism enhancing the somber mood, Aronofsky has created a disturbing look at the world. Max is deeply paranoid, holed up in his apartment with his computer Euclid, obsessively studying chaos theory. Blinding headaches and hallucinogenic visions only feed his paranoia as he attempts to remain aloof from the world, venturing out only to meet his mentor, Sol Robeson (Mark Margolis), who for some mysterious reason feels Max should take a break from his research. This movie is complex--occasionally too complex--but the psychological drama and the loose sci-fi elements make this a worthwhile, albeit consuming, watch. Pi won the Director's Award at the 1998 Sundance Film Festival. --Jenny Brown
The Punny Pi Guy
At your Pi Day event, interview a guy with pi symbols stuck all over him. Have all of his answers be pi related - heavy on the puns. It's best when the interviewer gets annoyed at the puns and tries to come up with harder questions (to which Punny Pi Guys always has an answer for).For example:
Q. What's your favorite food?
A. Pie.
Q. Other than pie.
A. Pizza pie.
Q. Other than pizza pie.
A. Paella?
Q. What's you favorite story?
A. Peter Piper
Q. What do you want to be when you grow up?
A. A Pilot.
Al G. Bra's Pi Day Video Collection
Pi In The Bible
Is Pi in the Bible? Well, yes, sort of.In the description of Solomon's Palace, specifically in the verse I Kings 7:23, the Bible gives the dimensions of a round "molten sea", which is an immense round basin of cast metal. Since it gives enough dimensions, we can work backwards to calculate pi. The Bible says the following:
And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it about. (KJV)
The problem that arises is that if you do the math on those figures then pi equals 3, but we know this is not accurate. I believe that since the Bible is not a science book, or a math book, that this error is simply stems from the writer rounding to the nearest cubit.
Visit this site for more information on Pi In The Bible.
Pi mp
Pi Symbol Ice Cube Trays
When hosting the Pi Day soirée at your geek bachelor pad you'll need the proper equipment to ensure success. Square ice cubes just will not do. Round out your party with ice from these super pi ice cube trays available at ThinkGeek.com.Also check out the ultimate in Pi Day cocktails...the Pi-Tini.
These stylish silicone ice trays cast frozen H2O into the symbol for your favorite irrational number.
Pi Day Guestbook
Here you can wish everyone a Happy Pi Day, share your Pi Day stories and ideas, and ask any Pi questions.
puzzlemaker wrote...
We love Pi around here. Only learned that there is a Pi Day this year. What a cool lens (specially for math junkies like us). I LOVE those greeting cards.
Posted June 22, 2009
KarateKatGraphics wrote...
Can't believe I missed Pi Day! My kids are obsessed with pi, for some reason. Very cool lens. 5*****
Posted April 07, 2009
jtpratt wrote...
Wow, you like pi almost as much as I like Free eBay Wordpress Plugins (my latest lens). Please stop by and give it a visit - I rated your lens 5 stars!
Posted March 30, 2009
Amitabh1702 wrote...
I have featured your lens in my lens => The Music of the Primes - Book Review
Hope you approve.
Posted March 27, 2009
nDee wrote...
Awesome-tastic! (That's 5-Stars, in case you didn't know ;-)
Thanks for this lenses . . .
Posted March 25, 2009
Amitabh1702 wrote...
I love "e". But since there is no e-day, your lens is the nearest to celebrate something mathematical. Great lens. 5*'s.
PS: I came across this equation quite some time ago, but I still haven't been able to digest it. How can two irrational number, an imaginary number and the number 1 cancel each other perfectly?
1 e**(i*pi) = 0
PPS: In case you enjoy mathematics, you might want to check out Are you afraid of mathematics?
Posted March 24, 2009
