This link has been bookmarked by 40 people . It was first bookmarked on 17 Aug 2007, by paul allitor.
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16 Mar 09
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05 Sep 07
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28 Aug 07
Tom Woodwardcrazy tricks some of which could be used to demonstrate physical concepts or be part of math problems
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Tom Woodwardcrazy tricks some of which could be used to demonstrate physical concepts or be part of math problems
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27 Aug 07
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21 Aug 07
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20 Aug 07
amplify mobilepull a van up a hill with a rope pulley
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17 Aug 07
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16 Aug 07
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15 Aug 07
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