The web site “MathMovesU” has a Pi Day toolkit for parents, students and teachers
You learned it in school. For many, it is an engima. It’s Pi. Pi (Greek letter “π”) is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its diameter — which is approximately 3.14159.
And, if you can believe it, Pi has it’s very own holiday on March 14th (3/14). Today is Pi Day, celebrated by math enthusiasts around the world. Pi has been calculated to over one trillion digits beyond its decimal point. So whether you celebrate with a piece of chalk and a chalk board, or with an actual delicious pie… you’re honoring 3.14. For all of you’re pi info, visit: http://www.piday.org/
This Pi song will help you understand!