1. What is Pi?

2. the ratio of a circle’s circumference to its diameter
Pi equals…
the ratio of a circle’s circumference to its diameter

3. Circumference to Diameter Ratio

4. The Method of Exhaustion
Method used to compute the area inside a circle by using the area of polygons with increasing side lengths.
Archimedes (c. 287 BC–c. 212 BC) used this method to approximate the value of pi.
This concept is a precursor to limits and the methods of calculus.

6. Did you know… Pi Day is often celebrated on March 14 at 1:59 p.m.
The first Pi Day was celebrated at the San Francisco Exploratorium in 1988.
The staff and public marched around in one of its circular spaces, and then consumed pies.
The Massachusetts Institute of Technology delivers acceptance letters to prospective students on Pi Day.
Albert Einstein’s birthday is also on Pi Day.

7. A Few Ways to Celebrate…
Play Pi Trivia or a Pi Scavenger Hunt
Create illustrations, posters, mobiles, and other art forms of pi.
Make a video, song, skit, rap about pi.
Construct a timeline of the development and use of pi throughout history.
Write stories, poetry, other forms of writing
write a “pi-ku” or “piem” – poem where each line contains the number of words that corresponds to the digits of pi, or the number of letters or syllables in each word correspond to the digits of pi
Take the Pi Day Challenge
Measure circles and eat pie!

8. 4th Annual Pi in the Face Event
East Lee Traditional Celebrations
4th Annual Pi in the Face Event
3rd Annual Pi Bee

9. Pi in the Face Monday, March 14
Three teachers/administrators get a pie in the face, one during each lunch.
Anonymous penny votes are collected in math class.
Voting starts today and ends Friday, March 11.
The three teachers/administrators who “win” the contest will each choose a student to throw a pie.

10. Pi Bee – Memorization Contest
Round 1 – Written
Tuesday/Wednesday, March 8/9 in class
Winner is determined by the most correct consecutive digits
Counting stops after first error
Each semi-finalist receives a certificate and mini-pie
Round 2 – Verbal
Thursday/Friday, March 10/11 in the auditorium
Semi-finalists compete to determine one winner per period
Each finalist receives a plaque and whole pie
Round 3 – Written
Tuesday, March 15 in room 226, during 3rd period
Grand champion receives a trophy and TI-Nspire Calculator

11. Check out www.cow-pi.com for memorization practice
Champion
ELCHS
Pi Bee
2011
Check out for memorization practice

12. 2010 Pi Day Memories