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.)