The most recent Math Teachers at Play, #15, is up at the Homeschool Math Blog. I got completely distracted by the first post about some math for kindergarteners, and several clicks later I was listening to binary music. As usual the rest of the Carnival is full of great stuff as well.
Speaking of Carnivals, assuming I don’t lose track of the days we’re hosting the next Carnival of Mathematics here on Friday! You can email submissions to hlewis5#naz.edu [except replace that # with a @], ideally putting something like “Carnival” in the title, or post a link here or with the previous announcement. And since I’m a procrastinator, I’d say you safely have through Thursday night to submit.
On an unrelated note, but just because it’s fun, here’s what a colleague wrote on the whiteboard of my office:
111,111,111×111,111,111
(I think it’s more fun to do by hand than on a calculator, but it’s neat however you find the answer.)
360 
September 8, 2009 at 8:36 pm |
“and several clicks later I was listening to binary music.”
You must be talking about my article! It’s a great tune.
September 9, 2009 at 11:08 am |
I am, Rick! 🙂
September 9, 2009 at 4:19 pm |
Another little calculation in the same spirit involving 111 million, 111 thousand and 111: 13717421/111111111. 🙂
September 9, 2009 at 8:38 pm |
The answer to 13717421/111111111 is less mysterious when given as 123456789/999999999.