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        3-6

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        Auditory, Visual

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        Stream, Download and Share


        Part of Cyberchase
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        Keeping Track of the New York City Marathoners

        In this video segment from Cyberchase, Bianca has volunteered to help count the number of runners participating in the New York City Marathon. She must keep track of the runners as they pass a certain checkpoint on the course. There are at least 30,000 runners, so she has to develop a good strategy for counting such a large number of people. She tests out a few options, but finds that an abacus may be her best tool.

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