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Scrapathon with a twist - Building CD tanksBased on the idea of cotton-reel tanks, families build rubber band powered tanks from kits of scrap materials and then decorate them to their own design. Then a competition finds the family who have built the most accurate tank and who can judge just the right amount of rubber band winding to reach the target! The tanks are constructed from recycled materials and the families can decorate them once the basic construction has been completed. |
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