Why does a magnet pick up a paper clip but not a leaf or a penny? How can the whole world be a magnet? Follow the step-by-step instructions about how to make your own magnet, and then find out for yourself what makes a magnet!

Franklyn M. Branley was the originator of the Let's-Read-and-Find-Out Science series and the author of close to 150 popular books about scientific topics for young readers of all ages. He was Astronomer Emeritus and former Chairman of the American Museum of Natural History-Hayden Planetarium.