The perfect science fair idea books. Spectacular Science Projects Janice VanCleave's Magnets
* How does a compass work?
* What is a magnetic field?
* How can you make a magnet with electricity?
Janice VanCleave's Magnets includes 20 simple and fun experiments that allow you to discover the answers to these and other fascinating questions about magnets, plus dozens of additional suggestions for developing your own science fair projects. Learn about magnetic poles using a bar magnet, paper, and string; about magnetic force fields with a compass, a pencil, and a sheet of paper; and much more. All experiments use inexpensive household materials and involve a minimum of preparation and clean up