Pi Clock at piday.org:
is celebrating their 22nd annual Pi Day:
Come create Pi puns, participate in Pi-related antics—and have a slice of pie
The site owners have sorted through hundreds of ideas and chosen their 50 ideas best for celebrating Pi Day. (Be sure to check out the Pi Day Carols, too!)
Pi Day is rapidly approaching. This year it is on Saturday, March 14th – but don’t miss out! Teachers can observe this “holiday” on Friday, March 13th instead.
Here are some great sites to help you celebrate with your students.
Pi, Pi Mathematical Pi
Song and animation. Enjoy!
TeachPi.org
Source on the web for teachers who want to find or share ideas for Pi Day activities, learning, and entertainment.
WikiHow: How to Celebrate Pi Day.
Tips on making this day (celebrated on March 14 at 1:59pm) memorable to one and all.
The Joy of Pi
Web site includes links, facts and information about the book: The Joy of Pi.
San Francisco’s Exploratorium’s 2009 Pi Day site
Plenty of Pi Day resources, including Pi-Ku:
Passionate about Elementary Math + Author! + Teacher Trainer and Coach + Treasure Hunter + Learner 
as well as in Canada, China, England, Germany, Ghana, Guam, Japan, Mexico, and The Republic of Palau.
