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After watching video try to imagine a new machine or invention that can change the world.

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Watch the Video

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Communication

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Refrigerator

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Engines

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Compass

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Printing Press

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Medicine

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Plumbing

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Paper

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Wheels

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Warch the video. Do you agree with the video?

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Do you know any other invention you consider changed the world?

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Do you know another great Invention?.   about that invention.