From: SKIRBY@aol.com
Date: Wed Nov 07 2001 - 16:24:10 PST
From: SKIRBY@aol.com Message-ID: <147.438a250.291b2aaa@aol.com> Date: Wed, 7 Nov 2001 19:24:10 EST Subject: Re: Pinhole Digest #759 - 11/02/01
I use sample CD's for the study of torque. I have the students build
mobiles and mathematically explain how and why they are balanced. The
mobiles must be 5 levels deep and the more complicated the better. The CD's
work well because they have the hole and they are plentiful.
Sharon Kirby
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