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Explore structural science as Ruff Ruffman uses his new service, called "Ask Ruff First" or "ARF, to help kids looking for a way to keep their mini-golf tower from tipping over in the wind. [5:00]
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Explore structural science as Ruff Ruffman uses his new service, called "Ask Ruff First" or "ARF, to help kids looking for a way to keep their mini-golf tower from tipping over in the wind. [5:00]