Happy Square Root Day!


These days don't come along very often. The holiday dates back to (any guesses?) Sept. 9, 1981 and was started by a high school teacher in Redwood City, Calif. We'll have to wait until April 4, 2016 for the next one. I hope you are doing something special today to celebrate the occasion. That is unless you are saving your energies for March 14 -- international Pi day, of course.

Have any of you teachers marked either occasion in your classroom?

Last Oct. 23, some chemistry students decorated Fairfax High School's hallways to commemorate Mole day. Mole day celebrates a basic measuring unit in chemistry (6.02 X 10^23) known as Avogadro's Number. Dozens of web sites offer suggestions for how to celebrate the day and -- by extension, science -- by eating molasses cookies and telling mole-related jokes.

Q: What did Avogadro teach his students in math class?
A: Moletiplication

Enough said.

By Michael Alison Chandler  |  March 3, 2009; 1:50 PM ET
Previous: Story of a Math Formula | Next: Honors Pre-Calculus


I've never thought about celebrating a square root day. But Pi Day is a big one (3/14 is also Einstein's birthday, which tends to be popular among the same crowd).

If you're planning a party (I am!), pi-stachios are great appetizers, and a pizza pi is always popular. Of course, for desert, it's tradition to have homemade pi; if you get yours from the grocery store, at least make sure to take it out of the plastic shell. For the health-conscious, maybe some slices of pi-neapple and pa-pi-ya. And don't forget to wash it all down with an ice cold glass of 22 over 7 Up!

Back when I worked at Kennedy Space Center, we used to celebrate every year. Last year, we even had a fundraiser for the National Council of Teachers of Mathematics - people put money into jars for each manager, and the 3 with the most took a whipped cream pi in the face. (Not sure what was up with 3, must have been a few folks from Indiana....)

Posted by: tomsing | March 3, 2009 4:08 PM | Report abuse

When I taught at Lake Braddock, we did mole day for every year. I even had kids who showed up as the 6:02 crew (at 6:02 am) and gathered outside by the bear and pledged allegiance to the mole and sang songs as well. Mole day is a great holiday, sadly at my new school, the kids are just not that in to it, but there are neat videos of kids projects on youtube... :)

I always celebrate pi day as well, and it also comes right before the "Ides of March" so we do multiple classroom connections!! :)

Posted by: annwhite1 | March 3, 2009 4:46 PM | Report abuse

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