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.
Grades
 6,
 7,
 8,
 9,
 10,
 11,
 12
Links

BrainPOP: Pi
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 ExLab Rat" icon for a fun experiment. NOTE: The web site is available by subscription only.

Pi Day
This page has a number of activities for middle and high school students to celebrate the Pi Day.

ThinkQuest: 3.14ever
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.

ThinkQuest: Word Search: Biographies of Pi
Find names in this word search puzzle of worldknown scientists who contributed and used pi while developing their theories. NOTE: The site has a link to a forum.

Math Forum: The Pie Trivia Quiz
This Microsoft Document file has trivia questions about pi. Answers are included.

Lesson Plan: Proving Pi
This lesson plan is designed for eighthtenth grade students to show how to prove that pi is equal to 3.14.

edHelper: Pi Day Coloring Page
Print out and color this Greek letter pi.

Math Forum: Pi Necklace
Learn how to make a Pi necklace using beads of different colors. NOTE: The site has a link to a forum for registered users.