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!