Bob introduces the wind tunnel.
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Robert and Bianca cutting out their airfoils.
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Other classmates doing the same.
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The third group, too.
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Constructing the airfoils.
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Victoria and Avery build their model wings.
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Bob lends Elvis and Kennia a hand.
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Preparing for flight.
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Kennia nervously watches her test run.
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Demoing the Wright brothers' model.
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Robert prepares his presentation.
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Watching a flight over Chapel Hill.
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