What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.

Of the six simple machines, the wheel and axle is probably the most recognized. But how does it help you work? Simple and fun experiments illustrate the basic concepts explained in the text to show you just how easy work can be.

We've all seen screws, but how do they work? Why is it easier to screw something into something than to simply push it in? With basic hands-on experiments and clear descriptions, this simple machine is explained.