This blog is still alive, just in semi-hibernation. When I want to write something longer than a tweet about something other than math or sci-fi, here is where I'll write it.
Wednesday, February 24, 2010
Wednesday Math, Vol. 110: A simple mnemonic for division and zero
You might remember from a math class ages ago that you can divide by zero. The problem is that a lot of students just hear "Zero... division... bad." It's perfectly okay to cut zero up into as many pieces as you like, but chopping a thing into zero pieces is problematic. This means another set of students will know that one way to have zero in a fraction is all right while the other way is bad, but they will forget which is which.
Christine Will, one of my fellow teachers at Laney, put this mnemonic up on the board during a talk and I think it's a good teaching tool.