The Invention Hunters travel the globe in their flying museum
collecting the world's greatest inventions! Today they've landed in
a construction zone. These silly scientists think they've stumbled
on incredible specimens of everything you'd never find at a
building site, from roller skates and pogo sticks to swords and
race cars. But what they really discover--with a kid as their
guide--is how simple machines like pulleys, cranks, and levers are
used to engineer tools ranging from jackhammers to dump
trucks...and even toilets! Using simple explanations and diagrams
and a heaping helping of humor, the Invention Hunters make the
perfect companions for curious kids who are ready to learn about
science, physics, engineering, history, and more.
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