Pi Day begins on 3/14 at 1:59:26 AM.

There’s a large shiny metal sculpture of pi in one of our local parks. My three-year-old daughter asked what it was. I knew it was the mathematical symbol for the number pi, beginning with 3.1415926, but I wasn’t prepared with a helpful answer for a child. That was six years ago.

My daughter and I have collected and explored many fun facts and resources since then. Nowadays, math is my daughter’s favorite subject and she’s looking forward to Pi Day, March 14 (3/14 beginning at 1:59:26 a.m.). For most of us, it might be easier to make a special observance at 1:59 p.m.

We like to start with the **free BrainPOP animated video about pi** and the **What Pi Sounds Like** music video.

**Fun Facts About Pi** **(****π****)**

- Pi is such a big number that we use the symbol π instead of 3.1415926…. Go to orgto see the
**first one million digits of pi**. - π is the lowercase of the sixteenth letter of the Greek alphabet. It represents “p.”
- π is the ratio of any Euclidean circle’s circumference to its diameter. Euclid was a Greek mathematician and author of the geometry text
*The Elements*. - Pi is an irrational number. That means it will continue forever without repeating.
- Pi cannot be represented as a fraction.
- Pi is a mathematical constant. The ratio between a circle’s circumference and diameter will always equal π.
- Albert Einstein was born on Pi Day, 1879.

**PI Day Activities and Resources for Kids**

- Pi Day began at the San Francisco Exploratorium. See the Exploatorium Pi website for
**Pi history and activities**, including eating apple pi, singing pi songs, and beading an ongoing pi chain. - You might
**make a pi necklace**to explore irrational numbers. - If you’ve got questions,
**ask Dr. Math about pi**at the Math Forum. You’ll also find archives of answers and links to further resources. - Joe Nowak’s recommends several
**Pi Day classroom activities**, including making a paper pi chain, reading famous pi poems and essays, listening to pi songs like**The Pi Song**, and watching the international film*Pi*. - Alex Sharp recommends several
**Pi Day lesson plans and activity ideas**, including Pi Day cards and games. - The Khan Academy video
**Tau Versus Pi**, suggests that tau might be a better number to look at than pi.

**Pi Printables**

**Pi Pies**– Find the circumference worksheet.- π – Color the
**Greek letter pi**.

Whether you get up at 1:59:26 a.m. or not, 3/14 is bound to be an interesting day of exploration into the neverending number π.