(Bellwether Media, Aug. 1, 2019)
Inclined planes have been around for thousands of years. They might have even helped Egyptians build the pyramids! This low-level title explores the history and functions of these machines. It includes diagrams and simple experiments to show how inclined planes make our everyday lives easier. 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!