Toppsta - Childrens Books – Reviews

George Graybill

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George Graybill

  • 0 stars across 3 books
    1st December 2008

    Water Conservation

    Water is essential for life on earth. How has climate change affected the water we drink, the oceans we fish and the lak... More

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    1st July 2007

    The Nature of Matter

    This is science made easy! You don't have to be a rocket scientist to understand matter and energy. We present important... More

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    1st July 2007

    Force, Motion and Simple Machines

    Give your students a kick-start on learning with all the required fundamentals for teaching force, motion & simple machi... More

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