[squeakland] [etoys-dev] Fwd: Calculus discovery by and for young people

[David Corking]

On Thu, Jan 27, 2011 at 1:32 AM, I wrote:

> At a brief (and all too cursory) first impression, Don Cohen's
> approach seems to be based on what a student can discover with pencil
> and paper.

Sorry - I missed "The Use of Calculators and Computers in Don's Books
and Tapes":

http://www.mathman.biz/html/useofcom.html