Levers

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  Figuring Out Fossils

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  Researching Rocks

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  Sea Horses

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  Rays

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  Investigating Heat

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  Investigating Magnetism

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  Heat

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  Investigating Electricity

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  Marveling at Minerals

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  Rocks

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  Earthquakes

  Library Binding (Lerner Pub Group Oct. 1, 2007)
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  Investigating Matter

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  Volcanoes: Earth's Inner Fire : A Carolrhoda Earth Watch Book

  Library Binding (Carolrhoda Books July 1, 1994)
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  Caves

  Library Binding (Lerner Pub Group Oct. 1, 2007)
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  Water Up, Water Down: The Hydrologic Cycle

  Library Binding (Carolrhoda Books Aug. 1, 1992)