Double Dog Activity

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From: Celia Cuomo (celia@mo.com)
Date: Sat Feb 05 2005 - 16:26:10 PST 

Message-Id: <244fa1da32fff67b3614917eedc591cf@mo.com>
From: Celia Cuomo <celia@mo.com>
Subject: Double Dog Activity
Date: Sat, 5 Feb 2005 16:26:10 -0800

Greetings all,

I am looking for an activity that I believe is called Double Dog. I
lost the copy I got a few summers ago at a TI workshop. The activity
uses blocks to model the fact that surface area to volume ratio
decreases as 3-D objects increase in size. The idea is to make a small
dog of blocks, figure out the surface to volume ratio, then make a
larger dog, and figure out the ratio again. I want to use the activity
to help my 7th graders understand the concept in relation to cells: as
in, there could never be a cell the size of you.

Anyone know how I can get a copy of the activity?

Thanks,
Celia Cuomo
White Hill School
Fairfax, CA 94930
celia@mo.com
415-454-8390 x218

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