Humans have been studying magnets for more than 4,000 years, and we still do not know everything about this captivating force. Learn more about the science of Magnetism in this informative AV2 media enhanced book. Contents: AV2 code -- Studying magnetism -- How magnets work -- Types of magnets -- How magnetic fields work -- Map of Earth's magnetic field -- Magnetic materials -- Measuring magnetism -- Magnetism timeline -- How are magnets used? -- What is a magnet engineer? -- Seven facts about magnetism -- Magnetism brain teasers -- Science in action. Interest Level: 3-6 Reading Level: 6.0 ATOS Book Level: 6 AR Interest Level: MG AR Points: .5 AR Quiz: 143975EN.