Interest Level: Grades 4-7

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  Engineering for Earthquakes

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  Engineering for Floods

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  Engineering for Hurricanes

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  Engineering for Space Disasters

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  Engineering for Tornadoes

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  Engineering the Human Body
  (Set of 8)
  

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  Establishing the American Colonies

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  Establishing the Judicial Branch

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  Establishing the Legislative Branch

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  Ethiopia

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  Everyday Inventions Inspired by Nature

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  Exoskeletons

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