Date: Aug 27, 2013 6:22 PM
Author: Richard Strausz
Subject: Re: To K-12 teachers here: Another enjoyable post from Dan Meyer

> On Aug 27, 2013, at 4:57 PM, Richard Strausz
> <> wrote:

> > So far, there are two 'voters'. I say that an
> exercise which helps students answer the question
> 'How can you fit a quadratic function to a set of
> data?' broadens the usual scope of an algebra class
> in a positive way. You vote 'No'.
> Broadens? How exactly do you broaden on something you
> didn't even teach? He isn't even trying to tie this
> activity to the quadratic function let alone the
> reasoning behind that function. No one is fitting
> anything to a quadratic function here. They are
> fitting a poorly thought out activity to a curved
> line on a piece of paper. How can anyone be gaining
> an understanding of ax^2+bx+c = 0 through this
> activity?
> Algebra avoidance has been pretty well documented on
> math-teach.
> Bob Hansen

How do you know that 'he' (actually the 'they' of the fellow posters and readers like me) didn't do any teaching of the quadratic function?