Introduce young scientists to the basics of pulleys. Through charming
illustrations and simple, easy-to-follow text, this nonfiction book
introduces pre-readers to the benefits of these engineering marvels,
providing everyday examples of a flagpole, a crane, an elevator, and
window blinds. Award-winning author Michael Dahl delivers fun,
fact-filled text for an engaging read-aloud or beginning read-alone.
Includes hands-on experiments!