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Math: Geometry: Pi Day

Learn the constant number Pi = 3.14. Find out why it is celebrated on March 14th every year. Discover why this number is considered to be a mysterious and fascinates some mathematicians. Learn how to calculate the number and use it for solving problems and equations. Includes animations, word problems, lesson plans, crafts, trivia, and quizzes.


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View this animated movie about the pi number in the Math section of the site to learn what pi represents, its history, and how to find this constant. Take a quiz after watching the movie and click on the "Bob, The Ex-Lab Rat" icon for a fun experiment. NOTE: The web site is available by subscription only.
This page has a number of activities for middle and high school students to celebrate the Pi Day.
This site is dedicated to the history and meaning of the Pi number. Click on the "Interactive" link for an audio lesson and read an article about the discovery of the millionth digit of pi. Explore other links on the page to learn the number's history and religous connections.
Find names in this word search puzzle of world-known scientists who contributed and used pi while developing their theories. NOTE: The site has a link to a forum.
This Microsoft Document file has trivia questions about pi. Answers are included.
This lesson plan is designed for eighth-tenth grade students to show how to prove that pi is equal to 3.14.
Print out and color this Greek letter pi.
Learn how to make a Pi necklace using beads of different colors. NOTE: The site has a link to a forum for registered users.

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