How to Build a Magnet?

You will need an iron nail, a length of copper wire, and a battery. 1. Coil the copper wire around the nail, leaving a couple of inches on each end. 2. Connect the ends of the copper wire to the battery, one end on negative, the other on positive. 3. Your nail then becomes magnatized, and should be able to pick up paper clips. Look here for more information: