So, as I get new posts daily/weekly from Math Mistakes in my Google Reader, I keep thinking... I want to do something with this in my classroom.
As an experiment this semester (and since I'll only be in the classroom another 7-8 weeks, I'm just testing the waters to see what I want to do for next year), I put together an "extra credit" opportunity for my Math Analysis students to play around with the Math Mistakes blog posts.
Here are their instructions:
Students have to choose the Math Mistakes post they want to work with (I have them all organized by Unit on the Google Form) and write a blog post (they all have their own blogs) like the following:
I think this is a great way to have students analyzing and evaluating math work. I want to start collecting more problems from my own tests and quizzes as I see them and build the library of "mistakes" that we can analyze and work with.
What I'm liking best so far (I've had four kids do it in the last week) is that they have to not only FIND the mistake and explain what was wrong, but then they also have to solve it correctly themselves.