Square Root Day? How about Pythagorean Day?
Yesterday the whole world seemed to be discussing square root day. I ran a related activity in algebra, and was pleased by how the kids engaged.
So I went back to the well. Over at 360, TwoPi had suggested Pythagorean Day. I ran with it.
Today I wrote on the board,
Yesterday we found all the days in your lifetime for which the month times the day equaled the last two digits of the year. Today, a related question. For how many days in your lifetime ?
And I left it up. We worked on other things. The bell rang. And then some kids came up to discuss the problem. And other freshmen filtered in. They dismissed anything in the 1990’s. And then one kid found March 4, 2005. And it took almost 10 more minutes for them to find the second solution. I was surprised how long it took. And only one kid really got it.