Re: pinhole CD spinners

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From: pauld@exploratorium.edu
Date: Wed Aug 21 2002 - 09:21:13 PDT 

Message-Id: <200208211621.g7LGLAH06861@isaac.exploratorium.edu>
From: pauld@exploratorium.edu
Subject: Re: pinhole CD spinners
Date: Wed, 21 Aug 2002 09:21:11 US/Pacific

Coral developed a simple version of a CD spinner.
Hot melt glue a marble to the bottom of the hole.
Hot melt glue a soda bottle cap to the top of the hole.

Use the bottle cap as a handle to spin the disk which will rotate on its marble
base.

Did I get this right Coral?

Paul D

> Does anyone remember how to turn old CD's w/ cases into spinners for a math
> class? I saw someone do it at RAFT years ago, and I can't remember how it
> was done.
>
> Many thanks,
>
> g
>
>
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