Date: Jan 7, 2013 1:54 PM
Author: GS Chandy
Subject: Re: "teaching fractions with paper folding"

Jonathan Crabtree posted Jan 7, 2013 12:07 PM:
> Re: "teaching fractions with paper folding"
> Multiply is from the Latin multiplicare. Plicare is
> Latin for fold. Multi means many.
> This is also how we get the word manifold, as in
> twofold, threefold, fourfold and manifold increase.
> Whether folding or unfolding, complex or simplex, the
> folding idea as a model has been around for a tad
> moer than 25 years now.
> "Those who cannot remember the past are condemned to
> repeat it."
> Jonathan Crabtree
> P.S. Crumple paper and you multiply it. Why? You find
> it in creases.

Interesting and useful! I was vaguely 'aware' of 'plicare' and 'multi' - but I had never put them together!

And your "P.S." quip is really neat.

Thanks very much!