I’m not really a math geek, nor do I play one on t.v., but I’m excited for Pi Day! (Aren’t you?)

**Pi Day is March 14 ***and* it’s also **Albert Einstein’s birthday**.

*and*

(Which I’m sure you already celebrate.)

For some of us, it’s been awhile since geometry so here’s a quick refresher:

- Pi is
**3.14**159 . . . (See the connection to March 14th now?) - Pi is the number you get when you divide the circumference of a circle by it’s diameter.
- Pi is infinite.
- Mathematicians at the University of Tokyo used computers to calculate pi to 1,241,100,000,000 decimal places – which is the world record.
- Pi is also written as a symbol: π .

## 3.14 Ways to Celebrate Pi Day With Kids

**1. ****View the first million digits of Pi on the Pi Day website** — it takes some time to read but I’m sure you can do it.

**2.** **Read books about pi.** ** Sir Cumference and the Dragon of Pi, Why Pi?, **and

*The Book of Perfectly Perilous Math.***3.** **Make a pi paper chain or necklace.** Give each digit a color. Then, using paper strips, create a pi chain. Or use beads and make a necklace in the same color-coded way.

**0.10** **Do a jar lid exploration of pi.** Get a variety of jar lids, scissors, string, rulers, calculators. Work in pairs or groups with one jar lid. Use the string to measure the circumference of your lid (wrap around, then use the ruler to measure.) Use the ruler to measure the diameter of your lid. How many diameters get you to your circumference? Discuss. Great post on this activity on Geek Mom.

**0.04 Wear Pi Gear.**

**Buy pi shirts** on Etsy, Think Geek, This Next (below “Mu-tant Cow Pi,”) Cafe Press, or Mental Floss.

For more Pi Day learning fun, visit **Teach Pi.org**.

## What will you do to celebrate Pi Day?

pi images Some rights reserved by Mykl Roventine

vicky says

I really liked the the “Pi” and surely going to buy 1 or 2 for my kids. Personally i liked the “quick refresher” section.

Gwyn Ridenhour says

Fabulous post, Melissa! Be sure to check out Vi Hart too. She has a great clip on why pi is wrong. But she still loves pie. And she makes you love pi too, even though she’s pro-tau

http://www.youtube.com/watch?v=jG7vhMMXagQ&feature=player_embedded

Lori Lavender Luz says

I’ma celebrate with French Silk!

PragmaticMom says

I can’t believe I missed this one! My middle daughter told me about pi day at dinner last night but they didn’t do anything special at school! Fun stuff! Thanks for all your great ideas! I will try to join this party next year.

Mia

giftedteacher says

Come and check out all the things i have planned for PI Day at http://teachingisagift.blogspot.ca/2013/03/huge-pi-day-celebration-and-freebies.html!