4476997
9780516236186
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!Barkan, Joanne is the author of 'What Is Density? ', published 2006 under ISBN 9780516236186 and ISBN 0516236180.
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