Happy Birthday Albert Einstein & Happy Pi Day

Next to "My Hero Zero", Pi is probably one of my favorite numbers. Though I may be a bit irrational at times, so is Pi, also known by the by the greek letter π. Pi is the ratio of a circle's circumference to it's diameter and is approximately equal to 3.14159.  March 14th (get it 3/14 -- 3.14!) is a day to celebrate the uniqueness of this mathematical constant and ironically it is also Albert Einstein's Birthday.  Below is a collection of websites taken from an Edutopia Article by Matt Davis for you to explore Pi with your students - If you want to celebrate Einstein's Birthday, I suggest a round cake!

• Pi Day Activities from the San Francisco Exploratorium: Without the Exploratorium, we might never have had an official Pi Day celebration. In 1988 Exploratorium physicist Larry Shaw started the tradition, and it was finally recognized by Congress in 2009. The Exploratorium highlights some great hands-on activities, and there is also a great list of Pi-related links.
• Happy Pi Day from TeachPi.org: TeachPi hosts a trove of Pi Day resources, featuring fun classroom activities, Pi Day-inspired music, and other fun learning ideas. There's plenty here to keep students engaged, and learning, on March 14. Check out the activities section for a bunch of great learning ideas.
• Pi Day Teaching Ideas from Scholastic: Scholastic produced these great lesson plans for three different grade levels -- preK-1, 2-3, and 4-6. There's also interesting information about the history of Pi, as well as a link to aWeb application that allows students to explore Pi through music.
• Pi Day Resources from Math Goodies: Math Goodies features some great, free math lessons that incorporate Pi. Check out their circle lessons, as well as links to other online resources and list of questions for students to research the history of Pi.
• What Is Pi, and How Did It Originate?: Scientific American dug deep into the history of Pi in this article, offering an insightful look at the origins of the mathematical constant.
• TeachersFirst's Pi Day Resources: TeacherFirst offers this great roundup of Pi-themed lessons and resources from around the Web focused primarily on high school. Included in the collection are some general math resources, like Simpsons Math, and they all come from a variety of great sources.
• Celebrate Pi Day with the National Council of Teachers of Mathematics: There's plenty of great resources here from NCTM. Along with fun activities, there's also an Illuminations lesson plans section with some great standards-based lesson plans for educators.