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  • What Is Density?

    Joanne Barkan

    Library Binding (Children's Press(CT), March 1, 2006)
    What do a softball, a popcorn ball, and a birthday party balloon have in common? They all are made of matter and take up space. Is What Is Density? young readers will find out why the baseball is heavier than the popcorn ball and why they'd better hold on to the string of that balloon!
    I

  • What Is Density?

    Joanne Barkan

    Paperback Bunko (Children's Press(CT) (2006-09-01), March 15, 1656)
    None