Mighty Maddie /
Murphy, Stuart J.,1942-
Lum, Bernice,illustrator.
New York : HarperCollins,
[2016?],  ©2004.
As Maddie cleans up her room, she learns how to compare the weights of various objects.
"Ages 4-8" -- Back cover.
"Level 1, Comparing weights."
As Maddie cleans up her room, she learns how to compare the weights of various objects.
Includes bibliographical references (p. [33]).
Weight (Physics)