## Pi Day Roundup

[Feature photo above by Nicolo’ Canali De Rossi.]

Math holiday alert: March 14th is Pi Day. But why limit ourselves to a single day? Playing with math should be a year-round adventure! Here are some ideas to help you celebrate…

Pi Day Posts on Let’s Play Math! Blog

## Key Lime Pi

This may be my favoritest ever Pi Day T-shirt, designed by the admin over at 10-Minute Math. I admit it’s not very mathy, but I’ve always enjoyed word play, and I love key lime.

The design won a Reflection T-shirt Company contest and is now available to pre-order for only \$8.99 (plus shipping). [Company seems to have gone out of business? Can’t find their website…]

Unfortunately, it won’t be available in time for this Friday’s class.

## Math History on the Internet

[Image from the MacTutor Archive.]

The story of mathematics is the story of interesting people. What a shame it is that our children see only the dry remains of these people’s passion. By learning math history, our students will see how men and women wrestled with concepts, made mistakes, argued with each other, and gradually developed the knowledge we today take for granted.

In a previous article, I recommended books that you may find at your local library or be able to order through inter-library loan. Now, let me introduce you to the wealth of math history resources on the Internet.

## Happy Pi Day II

Now there is an ancient Greek letter,
And I think no other is better.
It isn’t too tall,
It might look very small,
But its digits, they go on forever.

## Time to Celebrate

Are your students doing anything special for $\pi$ Day? After two months with no significant break, we are going stir crazy. We need a day off — and what better way could we spend it than to play math all afternoon?

If you need ideas, here are some great $\pi$ pages:

## Egyptian Geometry and Other Challenges

Would you like to study “the knowledge of all existing things and all obscure secrets”? That is how Scribe Ahmose (also translated Ahmes) described his mathematical papyrus. Ahmose’s masterpiece is now called the Rhind Papyrus, after Alexander Henry Rhind, a Scotsman who was one of the first archaeologists to make meticulous records of his excavations (rather than simply hunting for treasures). Rhind purchased the papyrus from an antiquities dealer in Luxor, Egypt, in 1858.

Ahmose’s writing included a huge table of fractions as well as story problems, geometry, algebra, and accounting. Can you solve any of Scribe Ahmose’s problems?