Learn all about magnetism and how magnets work.  What is a magnet?  How does a compass work?  What is a magnetic field, and why is it important to earth?  How do magnets help us store digital data?  The answers to these questions and more are covered in depth with detailed graphics and exciting video featuring experiments with magnets and magnetic fields.  On-screen, multiple-choice reviews at the end of each segment reinforce important concepts and make learning fun.