Building Machines explores the powerful mechanics of construction vehicles and includes everything needed to build nine machines with working parts The construction vehicles introduced are a forklift, bulldozer, front loader, giant digger, dump truck, road roller, crane, and tractor. Each spread describes the vehicle in detail, including its parts and function. The spreads also include instructions for constructing the machine described using the included die-cut pieces. Children can follow the steps to make each vehicle, then use the pieces to invent their own. It's the perfect introduction to simple mechanics for budding engineers everywhere.