(Bellwether Media, Aug. 1, 2019)
Pulleys help us lift and lower things with ease! This title uses simple text and diagrams to explain the functions of these simple machines, and an experiment lets readers try out their own pulleys! Beginning readers will be pulled into this title that explores the historical and modern uses of these helpful machines. Pulleys, levers, and wedges have been around for thousands of years! This title introduces young readers to the science behind these simple machines and how they make our lives and work easier every day. Features such as diagrams explain tough concepts, while experiments let readers test the machines themselves. Readers will discover just how fun simple machines can be!