How can you get a flag up a pole? How can you transport a bucket from one level to the next without leaving the ground? You can use a pulley! This book introduces readers to the simple technology that makes a big difference in our world. Readers will discover the parts of a pulley and how they work, as well as how pulleys are used, from machines at the gym to an elevator. They'll also explore concepts of gravity and friction in an age-appropriate way. Exciting illustrations are paired with achievable text to bring this science and technology topic to life. Readers will gain a deep understanding of how pulleys work in the real world.
