There are many ways of observing Pi Day. Here are some fun ideas for you to incorporate into your day:

- Discuss the number π. Check out the brief history of π here and how to compute digits of pi here.
- Complete interactive exercises at the end of this lesson plan. Here are some fun Pi Day activities.
- You can discuss this BBC article about Pi.
- Listen to the Pi Day Song.
- End your Pi Day celebration by eating pie!

**10 Fun Facts about Pi**

- Pi is the number of times a circle’s diameter will fit around a circles circumference.
- Pi is the 16th number in the Greek alphabet. In the English alphabet, p is also the 16th letter.
- If one billion digits of pi were printed in average it would go from NYC to the middle of Kansas (this has been tested).
- Pi is also a food, but that is spelled p-i-e.
- Pi is the most recognized math symbol in the world.
- Pi is also referred to as the “circular constant,” “Archimedes’ constant,” or “Ludolph’s number.”
- Some scientists believe Japanese is the best language to memorize pi.
- Even computers can’t compute pi, so don’t feel bad if you can’t.
- Isaac Newton calculated pi to at least 16 decimal places.
- Albert Einstein was born on pi day (3/14/1879).

**Help us celebrate this never-ending number (3.14159 . . .) and Albert Einstein's birthday:**