Sir Cumference and the Dragon of Pi to help students get acquainted with the number.
Learn more about the history of Pi from Exploratorium. Also check out their page of hands-on activities to help students understand the value of Pi.
Have fun with language connections by making pies and discussing homophones and how they can sometimes cause confusion. Decorate your pies with these clever printable tags from Don't Eat the Paste.
*Edited to add, we decided to celebrate Pi Day with a Soda Cracker Pie, which is a surprisingly yummy treat made of saltines, egg whites, and nuts.
Mock Apple Pie with crackers and lemon juice. During the Depression, a handful of nuts became an entire pecan pie when supplemented with soda crackers. You can make your own Poverty Pie and then discuss how necessity is the mother of invention.