From: Gail (for Teacher2Teacher Service)
Date: Nov 27, 2001 at 21:53:54
Subject: Re: Volume of a sphere

As a start, do they understand how to find the volume of a cube?  If so, it 
would be interesting to determine the volume of a cube that would have sides 
equal to the diameter of the shpere.   It would be even better if they could 
see the two togheter, so they would recognize which was larger.

Have they ever compared the area of a circle with the square that can be 
circumscribed around it, and the one that can be drawn inside?   My fifth 
graders were very interested in the relationship between these three 
objects.  If you have explored this with your group, it would be easy to 
relate it to this added dimension.  

 -Gail, for the T2T service

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