Spilsbury, Louise . Levers . ISBN 9781538337530 . Spilsbury, Louise . Pulleys . ISBN 9781538337578 . Spilsbury, Louise . Screws . ISBN 9781538337615 . Spilsbury, Louise . Wedges . ISBN 9781538337653 . Spilsbury, Louise . Wheels and Axles . ISBN 9781538337691 .ea vol: 32p. (Technology in Action). further reading. glossary. index. photos. websites. PowerKids . Aug. 2018. lib. ed. $26.25. Gr 4-6 Whether skiing or skateboarding, riding a unicycle or a Ferris wheel, readers are using machines. The author includes standard hammer-and-nailstyle examples for clarity; however, it's the exciting action-based activities, such as rock climbing, riding a roller coaster, and mountain biking, that illustrate the concepts with modern flair and should appeal to contemporary readers. Vivid images of the machines in their simplest forms and as parts of larger devices are made more accessible through clear labels and detailed captions, while the "Technology in Action" spreads dig into the specifics of how the parts work. VERDICT Who knew simple machines could be so cool? A great addition to science collections.