Things That Float and Things That Don't

by David A. Adler, Anna Raff (Illustrator)

Overview

It can be surprising which objects float and which don't. An apple floats, but a ball of aluminum foil does not. If that same ball of foil is shaped into a boat, it floats! Why? And how is it possible that a huge ship made of steel can float? Answering these questions about density and flotation is David A. Adler's clear, concise text, paired with Anna Raff's delightful illustrations. Activities that demonstrate the properties of flotation are included.

Product Details

ISBN-13:	9780823431762
Publisher:	Candlewick Press
Publication date:	08/31/2014
Pages:	32
Product dimensions:	8.70(w) x 10.50(h) x 0.10(d)
Lexile:	AD540L (what's this?)
Age Range:	4 - 8 Years

About the Author

David A. Adler is the author of many children's books, such as Mystery Math: A First Book of Algebra and Fractions, Decimals and Percents. He lives in New York.

Anna Raff is an award-winning illustrator of many children's books. She has an MFA from the School of Visual Arts and lives in New York City.

Editorial Reviews

"Adler shows his customary skill for explicating mathematical concepts in this smart exploration of floatation and density."-Publishers Weekly (starred review)

"This title supports the Common Core State Standards that focus on measurement skills, interpretation of data, and incorporation of key ideas and details in the text. Recommended for math collections in public and school libaries and classroom shelves."-School Library Journal

★"It's rare to find a picture book that uses simple, hands-on activities so successfully, leading young children to a fuller understanding of a scientific concept."
—Booklist, Starred Review

From the Publisher

A boy, a girl and a dog demonstrate that things float in water when they are less dense than the water around them. Adler, who has demystified math for young readers for years in titles ranging from Roman Numerals (1977) to Millions, Billions, and Trillions (2013) turns his attention to physics with this simple but effective explanation of principles of flotation and density. His clear, logical text invites readers to experiment with different objects, to shape boats, and to make both ice and salt water mixtures. Raff's illustrations take this invitation further, showing a pair of children using toy boats, plastic bottles, pennies, aluminum foil, clay and ice to discover what things float and why. These digitally combined ink washes and drawings add interest and some humor, supporting and enriching the text, except on one page. There, a line showing the water level of a bottle to which salt has been added seems to show that the water level has risen though the author makes clear that the level should not change. Curiously, the series of experiments stops at that point rather than continuing with the denser salt water, as good teachers would encourage children to do. This appealing introduction can serve as a springboard for further investigations. (Informational picture book. 5-8)

Kirkus Reviews