Explore the science of pulleys, which is a key physical science. Young children will enjoy the fun illustrations and learn from the simple diagrams. The book encourages the reader to see science in action in their daily lives. It is perfect for young scientists who are curious about machines and how they work, and allows readers to encounter this STEM topic in an accessible way. The book is part of the Simple Technology series for children aged 5+ and is ideal for learning Science and Design and Technology.