Date: Dec 17, 2012 1:17 PM
Author: Joe Niederberger
Subject: Re: Some important demonstrations on negative numbers > a MACS<br> syllabus

>Most of the popular modern math textbooks have stopped telling the story. No plot development. No character development. No formal development.

Here's an antidote to what I consider your simple dichotomies:
http://homepages.warwick.ac.uk/staff/David.Tall/pdfs/chapter1_about_this_book.pdf

One not agree with it entirely, but it represents a serious investigation.

Cheers,
Joe N