Robert E. Wells is the author and illustrator of many award-winning
science books for children, including Can You Count to a Googol?
and Why Do Elephants Need the Sun?. He lives with his wife in
Washington.
Robert E. Wells is the author and illustrator of many award-winning
science books for children, including Can You Count to a Googol?
and Why Do Elephants Need the Sun?. He lives with his wife in
Washington.
"A basic introduction to levers, wheels, and pulleys. As two
children lift a lion, pull a panda, and deliver a basket of bananas
to a baboon party, Wells offers explanations for how and why these
simple machines work. The hand-lettered text identifies technical
terms such as fulcrum, force, friction, and other such words (also
included in a glossary)."--School Library Journal
"This book is an introduction to three simple machines: the lever,
the pulley, and the wheel. Lifting lions, pulling pandas, and
raising a basket of bananas are the tasks the devices are used for.
The humorous illustrations both inform and amuse the reader."--The
Horn Book Guide
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