Searchlight books. How do simple machines work?

Explains the concept of work, describes machines and the parts of a lever, and includes simple experiments.

Explains the concepts of work and friction; describes machines, wheels, and axles; and includes simple experiments.

Explains what wedges are and how they work and uses simple experiments to help students understand their applications in everyday life.

Explains the concept of work, describes machines and different types of screws and how they are used, and includes simple experiments.

Explains the concepts of work, gravity, and friction, describes machines and different kinds of pulleys, and includes simple experiments.