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Have you thought to find a source of sand with a high magnetite content?
It's great fun to play with and an "aha"  to visitors that some of the
black grains in sand is actually magnetite.

>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>I am looking for cool magnetism experiments and dems. In particular I am
>trying to find some ring magnets to use for a floating ring magnet dem on
>a rod or piece of dowel etc. Ideally I want them to be plastic coated, big
>enough for kids to get hold of and experiment with, but not overly strong
>so that they may clamp down on someone's fingers. The only ones I can find
>are very small, 2 ½ to 3cm, are there any suppliers who do bigger ones?
>Any help on this would be great and any suggestions for other magnetic
>dems also appreciated.
>Pete
>
>Pete Wheeler
>Kids' Science State Project Officer
>Scitech Discovery Centre
>
>
>        Horizon - The Planetarium opening 6 April 2004
>
>After you've seen a dome screen, everything else looks flat.
>
>www.scitech.org.au/horizon
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>res/www.scitech.org.au/horizon>
>
>
>Our Mission is to increase interest and participation by Western
>Australians in science and technology.
>
>P: (08) 9481 6295
>F: (08) 9321 2869
>W: www.scitech.org.au
><file:///C:/Documents%20and%20Settings/pete/Application%20Data/Microsoft/Signatu
>res/www.scitech.org.au>
>E: [log in to unmask]
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>PO Box 1155
>WEST PERTH
>
>Western Australia 6872
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>
>
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Kate
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kate Hintz
Science Museum of Minnesota
Collections Gallery Manager
120 West Kellogg Blvd.
St. Paul, MN  55102

651-221-4508
651-221-4528 (fax)
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========================================
Witness an 8,000-mile journey that shaped a nation on the Omnitheater's
giant screen. "Lewis & Clark: Great Journey West" is now playing at the
Science Museum of Minnesota. Call (651) 221-9444 for reservations.

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More information about the Informal Science Education Network and the
Association of Science-Technology Centers may be found at http://www.astc.org.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message  SIGNOFF ISEN-ASTC-L in the BODY of a message to
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