61. Pi.org pi.ORG is under development! Come back soon. http://www.pi.org/

PI.ORG is under development! Come back soon

62. The Amazing History Of Pi That the ratio of the circumference to the diameter of a circle is constant (namely, pi) has been recognized for as long as we have written records. http://www.ualr.edu/lasmoller/pi.html

Did you know . . .? has a long and interesting history! Ancient history More pi history A novel way to compute pi- The symbol for pi ... For more information That the ratio of the circumference to the diameter of a circle is constant (namely, pi) has been recognized for as long as we have written records. A ratio of 3:1 appears in the following biblical verse: 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. (I Kings 7, 23; II Chronicles 4, 2.) The ancient Babylonians generally calculated the area of a circle by taking 3 times the square of its radius ( =3), but one Old Babylonian tablet (from ca. 1900-1680 BCE) indicates a value of 3.125 for pi. Ancient Egyptians calculated the area of a circle by the following formula (where d is the diameter of the circle): This yields an approximate value of 3.1605 for pi. Beginning with a hexagon, he worked all the way up to a ploygon with 96 sides! Archimedes's method for approximating the value of pi.

63. Pi Day Songs pi Day (March 14 or 314) is a day to celebrate our favorite number, 3.14159 . The marvelous mysteries of this number could be probed forever, http://www.winternet.com/~mchristi/piday.html

Pi Day (March 14 or 3-14) is a day to celebrate our favorite number, 3.14159.... The marvelous mysteries of this number could be probed forever, but we will limit ourselves to some carols you can sing on our numbers own special day, perhaps even at Pi o'clock that afternoon. These Pi Day songs were written by LaVern Christianson, when he was a math teacher at Windom Area High School, Windom, MN, USA, with some help from his colleagues. They have been sung by his classes, and by the classes of other math teachers in Windom for several years now. Since this site first appeared, we have recieved reports of many other teachers using them in thier classrooms, as well. We hope you enjoy. Sing heartily! Happy Pi Day Happy Pi day to you, Happy Pi day to you, Happy Pi day everybody, Happy Pi day to you. (to the tune of "Happy Birthday") Oh Number PI Oh, number Pi Oh, number Pi Your digits are unending, Oh, number Pi Oh, number Pi No pattern are you sending. You're three point one four one five nine, And even more if we had time, Oh, number Pi

64. EARTH MYSTERIES: Notes On Pi (¼ ) An introduction to the number pi and its history. http://witcombe.sbc.edu/earthmysteries/EMPi.html

written and produced by Chris Witcombe Sweet Briar College witcombe@sbc.edu Notes on Pi ( Pi, which is denoted by the Greek letter , is the most famous ratio in mathematics, and is one of the most ancient numbers known to humanity. Pi is approximately 3.14 - the number of times that a circle's diameter will fit around the circle. Pi goes on forever, and can't be calculated to perfect precision: 3.1415926535897932384626433832795028841971693993751.... This is known as the decimal expansion of pi. No apparent pattern emerges in the succession of digits - a predestined yet unfathomable code. They do not repeat periodically, seemingly to pop up by blind chance, lacking any perceivable order, rule, reason, or design - "random" integers, ad infinitum. In 1991, the Chudnovsky brothers in New York, using their computer, m zero , calculated pi to two billion two hundred sixty million three hundred twenty one thousand three hundred sixty three digits (2,260,321,363). They halted the program that summer. Pi has had various names through the ages, and all of them are either words or abstract symbols, since pi is a number that can't be shown completely and exactly in any finite form of representation. Pi is a transcendental number. A transcendental number is a number but can't be expressed in any finite series of either arithmetical or algebraic operations. Pi slips away from all rational methods to locate it. It is indescribable and can't be found. Ferdinand Lindemann, a German mathematician, proved the transcendence of pi in 1882.

65. Pi Day Purpose pi Day is a day to celebrate mathematics in your school. It gives us the perfect springboard to allow our students to have fun while investigating http://www.mathwithmrherte.com/pi_day.htm

M ATH WITH MR. HERTE Pi Day Pi Links Since April 13, 2002 Pi Day March 14th...Celebrate the Circle, Pi and the imagination and creativity of our students! Purpose: Pi Day is a day to celebrate mathematics in your school. It gives us the perfect springboard to allow our students to have fun while investigating mathematics concepts, being creative and even a little silly. If you have any ideas email them to me. I will eventually be attaching some of the materials to each activity so you can click onto it for more ideas. Pi Day Activities! Name That Circle! (9th -11th Grade) Students are shown a graph of a circle and the student that can correctly give it's equation wins! You can run it as a team competition or one on one. Be certain to go over the general equation of a circle first. For grade 9 or students who have not studied this keep all circles in the first quadrant. Examples Pi Digit Distribution (Elementary - HS) The younger students can look at the first 50 or 100 digits of pi and make a bar graph of the frequency of each digit. (How many times does appear?) Students enjoy this rich data source for bar graphs. HS students find the mean of the first 100 digits (use scientific calculators/graphing calculators) Create circle graphs based on the digits -excellent use of protractors, fractions, decimals and angles if done by hand. Use spreadsheets to examine the distribution of the digits. Examples Rolling Along...

66. Welcome To Pi Beta Phi The official homepage of pi Beta Phi Women s Fraternity, founded April 28, 1867. http://www.pibetaphi.org/

Home My Pi Phi Foundation RIF Form ... Contact Us Welcome! embed When you meet a Pi Phi, you realize there's something unique about her. There's an unmatched level of integrity and commitment to excellence, and a general aura of potential that sets this person apart from the pack. That's because she's a Pi Phi through and through and a member of a premier organization for women. Quick Links Recruitment Forms Sister Search Foundation Resource Library ... Pi Phi Express In The News We Closed the Book on 2007! During the last month of 2007, First Book and Pi Phi doubled the value of a click on  The Literacy Site . With each  click , two new books were donated to kids in need. First Book and Pi Phi successfully raised 45,134 books by December 31, 2007 in order to reach a goal of 300,000 books raised through www.theliteracysite.com for this past year. Thank you for your support! Interested Pi Phis Should Apply! White House Internship Details! A White House Internship is an opportunity for current students and recent graduates to experience everyday life at the White House while working with high-level officials on a variety of tasks and projects.  Applications  are due February 26, 2008. Check out

67. Delta Sigma Pi - America's Foremost Professional Fraternity For Men And Women Pu Official site of the national organization for men and women pursuing careers in business. Overview, event information, chapter list and links, job postings http://www.dspnet.org/

Home Contact Us Deltasig inCircle Search About Us Collegiate Members Alumni Awards ... Careers Welcome New Educational and Leadership Consultant Andrew Ochoa! In January, Andrew Ochoa, Texas-Arlington, begins his term as an educational and leadership consultant with the Central Office. more >> Record Breaking Number of Alumni Chapters! We now have a record-breaking 61 alumni chapters, thanks to the franchising of the San Francisco Golden Gate Alumni Chapter. more >> January 24th Spring LEAD Provincial Registration Now Available read more >> January 2008 S M T W T F S all events >> Web Hosting and Design by PPC Communications

68. Expansions Of PI Discoverer Archimedes (287212 BC) Found 3 10/71 pi 3 1/7. pi = 3. 1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 http://math2.org/math/constants/pi.htm

Expansions for PI Discoverer: Archimedes (287-212 BC) Found PI = Vieta's Formula Leibnitz's Formula PI/4 = 1/1 - 1/3 + 1/5 - 1/7 + ... Wallis Product PI/2 = 2/1 * 2/3 * 4/3 * 4/5 * 6/5 * 6/7 * ... 2/PI = (1 - 1/2 Lord Brouncker's Formula 4/PI = 1 + 1 2 + 3 (PI (PI Euler's Formula (PI (n = 1.. ) 1/n (or more generally...) (n = 1.. ) 1/n (k-1) PI B B (k) = the k th Bernoulli number. eg. B =1 B =-1/2 B =1/6 B =-1/30 B =1/42 B =-1/30 B =5/66. Further Bernoulli numbers are defined as (n 0)B + (n 1)B + (n 2)B + ... + (n (n-1))B (N-1) See Power Summations #2 for simplified expressions (without the Bernoulli notation) of these sums for given values of k.

69. Super PI Mod Modified Super pi version. 2005/02/22, Super pi mod now loads/saves the result times in msecs in pi_rec.dat. The original pi_rec.txt is no longer used http://www.xtremesystems.com/pi/

70. Sigma Delta Pi National Collegiate Hispanic Honor Society www.sigmadeltapi.org/ 19k - Cached - Similar pages Discovering the Value of piA lesson that uses an applet to allow the student to measure many circles and figure out the fact that pi exists and its value. http://www.sigmadeltapi.org/

71. Pi Kappa Alpha pi Kappa Alpha is dedicated to developing men of integrity, intellect, and high moral character and to fostering a truly lifelong fraternal experience. http://www.pikes.org/

Make A Gift Join Locate a Chapter/Alumni Assoc. Shop Pike ... incircle.pikes.org PI KAPPA ALPHA MEMORIAL HEADQUARTERS P 901-748-1868 F 901-748-3100 E pka@pikes.org Optimized for Microsoft Internet Explorer 1024 X 768 or greater

72. Pi Tau Sigma International Mechanical Engineering Honor Society pi Tau Sigma is a Mechanical Engineering Honor Society, instituted in order to establish a closer bond of fellowship among its members which will result in http://www.pitausigma.net/

ANNOUNCEMENTS Grigg's Scholarship Application DUE 2/1/08! Click HERE for Important Convention Updates Important Awards Application Updated New Secretary-Treasurer Dr. Alex Moutsoglou from South Dakota State University has taken over Mistree's position. Make sure you send all relevant information to him now! Letter from the President Read it here Awards Deadline Have all chapter records up to date and awards application submitted by January 29, 2008 Welcome to Pi Tau Sigma PTS Message Board Online! Pi Tau Sigma is a Mechanical Engineering Honor Society, instituted in order to establish a closer bond of fellowship among its members which will result in mutual benefit to those men and women in the study and in the profession of mechanical engineering. Pi Tau Sigma's core values are: Integrity (soundness of character and moral conduct), Service (serving the mechanical engineering profession and the community), and Leadership (being foremost and fostering initiative through example in a professional manner). A Mechanical Engineering Honor Society striving to create better engineers through commitment to academic excellence and dedication to service President Western VP Central VP Eastern VP International VP VP At Large Secretary-Treasurer Dr. Moutsoglou

73. Pi In The Sky A semiannual magazine aimed at high school students and their teachers with the purpose of promoting mathematical sciences. http://www.pims.math.ca/pi/

Official Web Site of the High School Mathematics Magazine in the Sky Download the new issue of Pi in the Sky today! Pi in the Sky issue 10 (2Mb) Check out the answers to Gordon Hamilton's Games, Problems and Puzzles ... article here. To begin a free subscription to the print version of our magazine, please contact us at pi@pims.math.ca Current Issue Past Issues About Us ... Contact Us Written permission from the original author is required for reproduction or translation of the articles and cartoons on this site.

74. What Is Pi? A Cool Lesson What is pi? Tell me everything you know. Then we share their thoughts at this point. From now on, when we use pi in a formula, they know what it http://www.middleweb.com/INCASEpi.html

What is Pi? A "Cool" Lesson From: Dr. Mavis Kelley mkelley@BADLANDS.NODAK.EDU To: The Middle-L listserv I sent this lesson over another listserve. Thought I'd share here, too, just in case it's helpful to anyone. If it doesn't make sense, send me a note. What is Pi? This is a cool lesson. Basically, you just need a collection of jar lids, of varying sizes, some string, scissors, rulers, and calculators. I also use chart paper to post and analyze the data. I have the students work in pairs. They each gather a few jar lids (you could even limit it to one). The more lids you have them measure, the larger the sampling size (another cool concept), and the more accurate the results. Then, I ask them to respond in their logs to the follow questions: What is pi? Tell me everything you know. Then we share their thoughts at this point. Then, I give them these directions for each jar lid. I caution them to be as accurate as possible. 1. cut a piece of string equal to the circumference of your lid 2. cut a piece of string equal to the diameter of your string

75. Alpha Delta Pi Sorority Alpha Delta pi Sorority, A national college sorority and greek organization offering information about sorority rush, joining a sorority, sorority housing, http://www.alphadeltapi.org/

ADPi Site Search: Member Sign-In First Time Signing In? Click here User Name: Password: Established in 1851, Alpha Delta Pi is committed to sisterhood, values and ethics, high academic standards and social responsibility. Epsilon Omicron 40th Anniversary Zeta Eta 35th Anniversary 352 Media Group

76. Delta Pi Epsilon - National Honorary Graduate Society Promoting Excellence Teach Delta pi Epsilon is a National Graduate Society for teaching and research for business encompassing teaching and research in business, economics, http://www.dpe.org/

location.replace("core/home.htm");

77. Pi Lambda Theta Home Page Founded in 1910, pi Lambda Theta is the most selective national honor pi Lambda Theta, PO Box 6626, Bloomington IN 474076646 E-mail office@pilambda. http://www.pilambda.org/

International Honor Society and Professional Association in Education Eligibility Ways to Join Member Benefits Publications ... The Educator As Leader (TEAL) Leadership Conferences Great Lakes Region Far West Region Northeast Region NSDC summer conference ... Online Store Lost your member number? Get it by e-mail. (If you have applied for membership recently please wait 30 days before requesting your member number.) Can't find what you are looking for? E-mail us Key to Your Future DON'T MISS THE NSDC SUMMER CONFERENCE! Orlando July 13-16, 2008 The National Staff Development Council (NSDC) sets the standards for educator professional development. In three short years NSDC’s summer teacher-leader conference has become the premier conference of its kind. It is developed by teacher leaders, for teacher leaders, and with teacher leaders. Register here for PLT's 10% members-only discount Plus Big early-bird discounts. Don't wait!

78. CLHS: Constant Variable PI An approximation to pi in some other precision can be obtained by writing (float pi x), where x is a float of the desired precision, or by writing (coerce http://www.lisp.org/HyperSpec/Body/convar_pi.html

Constant Variable PI Value: an implementation-dependent long float Description: The best long float Examples: See Also: None. Notes: (float pi x) , where x is a float of the desired precision, or by writing (coerce pi type , where type is the desired type, such as short-float

79. Pi Sigma Epsilon - National, Professional Fraternity In Marketing pi Sigma Epsilon is the only national professional fraternity in marketing, sales management, and selling. Our mission is to develop the sales and marketing http://www.pse.org/

80. Praetorian Pi The little Praetorian pi symbol but what does it mean? You may be asking yourself that question, or you may already know. How many people saw The Net? http://www.megsplace.com/pi.html

Praetorian Pi Meg6212@aol.com and let me know that you've taken one of my pi graphics, then place it on the bottom right side of your site and see what happens. Link the graphic to this page: http://www.megsplace.com/pi.html and don't forget to let me know. Then as people find it they will also be given the chance to continue the conspiracy or is it? Please remember that you may not have come from my site to this page, many people are out there on the net helping with this "conspiracy" - so if you found this page and haven't found my site and would like to check it out my site is http://www.megsplace.com Carry on the "Gatekeeper" - the Praetorian Pi symbol You may select from any of these graphics to place on your site. Simply save the image you like the best, and upload it to your own server. Then place it on the botton of your site to the right hand side and link it back to http://www.megsplace.com/pi.html then you will help continue to carry it on. Don't forget to let me know that you took one too.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 4     61-80 of 84    Back | 1  | 2  | 3  | 4  | 5  | Next 20