Tires, Spokes, and Sprockets: A Book About Wheels and Axles (Amazing Science: Simple Machines)

Pull, Lift, and Lower: A Book About Pulleys (Amazing Science: Simple Machines)

Roll, Slope, and Slide: A Book About Ramps (Amazing Science: Simple Machines)

Scoop, Seesaw, and Raise: A Book About Levers (Amazing Science: Simple Machines)

How Do You Lift a Lion? (Wells of Knowledge Science Series)

Simple Machines (Let's-Read-and-Find-Out Science 2)

Forces Make Things Move (Let's-Read-and-Find-Out Science 2)

Simple Machines (Rookie Read-About Science (Paperback))

Simple Machines: Wheels, Levers, and Pulleys

Simple Story of the 3 Pigs and the Scientific Wolf