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On Jun 19, 2008, at 6:20 AM, Paulo J. Matos wrote:
I am wondering if any of you as any gallery of turtle programs. I am
going show PLT Scheme to 12y.o. and I think this would be an
interesting way to start.
Consider an introduction that uses world.ss (see http://www.ccs.neu.edu/home/matthias/HtDP/Prologue/book.html)
and is derived from the idea in http://www.ccs.neu.edu/home/matthias/Essays/not-matter.html
i.e., algebra isn't useless, you can make movies with it.