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BBC DIY Science - Make your own catapult
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www.open2.net/...index.html
3-5science
6-8science
catapult
simple-machine
shared by
drew polly
on 03 Sep 08
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drew polly
on 03 Sep 08
Make your own catapult
<div class="cArrow"> </div><div class="cContentInner">Make your own catapult</div>
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drew polly on 03 Sep 08Make your own catapult
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