On Wed, 25 Sep 2013 12:03:12 -0600, Dave L. Renfro <email@example.com> wrote:
> One thing I like about his approach is that rather than immediately lead > up to some all-purpose distance formula, we work each distance evaluation > in the way the formula can be derived: dist^2 = (horiz)^2 + (vert)^2. > Or at least, do it this way for the first day or two of covering it. > Doing this will likely help counteract students' tendency to process > "why explanations" by having them go in one ear and out the other.
I suspect that what it really leads to for many students is several days of quietly waiting, without absorbing anything at all, for the black box they can memorize. Then they can forget what it's for. This latter is made easier by failing to come to grips with any meaning there might be in any of the exercises.
- --Louis A. Talman Department of Mathematical and Computer Sciences Metropolitan State University of Denver