1. Pi Day Celebration

2. Happy Pi Day "Probably no symbol in mathematics has evoked as much mystery, romanticism, misconception and human interest as the number pi” Blatner, David. The Joy of Pi. Walker Publishing Company, Inc. New York, 1997 π=3.1415 and tomorrow is 3/14/15

3. A Brief History of Pi Evidence of a fascination with π dates back to 2500 B.C. The ratio of the perimeter of the Great Pyramid of Giza to the height of the pyramid is EXACTLY 2π

4. Archimedes of Syracuse 287-212 B.C. Beginnings of an approximation of Pi 3.1408<π<3.14285 Using the ratio of the area of a polygon circumscribed to the ratio of a polygon inscribed in a circle, Archimedes approximated Pi using a 96 sided polygon. This method was used a second time by a Chinese Mathematician, Zhu Chongzhi, 600 years later. Chongzhi approximated Pi with a 12,288 sided polygon!

5. Why π? The pi symbol was taken from the Greek word for Perimeter The symbol was first used in 1707 by William Jones, then Later popularized by Leonhard Euler in 1737

6. October 19, 2011 Shigeru Kondo approximated Pi to 10 trillion digits using a super computer, setting the record for the longest approximation of Pi.

7. Math History Week Challenge Use the QR code to answer! One lucky student will win a free breakfast sandwich! For given numbers p and q, three of the following four expressions have the same value: p + qp – q p/qp*q Find the absolute value of the fourth expression.