This is an accessible and lively guide to the natural force of magnetism - what it is and how it works. You can learn how magnetism was discovered, the magnetic poles, how a compass works, how to test magnetic fields, and how magnets are used in everything from toys and games to cars and computers. It offers 15 fantastic hands-on projects that will help you to find out for yourself: make an electromagnet, a light switch, a magnetic fishing game, and your own loop compass. It is ideal for home or school use for 8- to 12-year-olds. Whether you know it or not, there are magnets hidden everywhere: in compasses, in hairdryers, in telephones, and in computers. This book takes the reader through the different uses and aspects of magnetism: how magnets make engines work, how they can help you to find your way, and even how magnets can be switched on and off! More than 200 vibrant photographs, drawings and diagrams make it fun to learn, while 15 exciting and easy-to-do projects and experiments will allow you to see the scientific principles in action. The step-by-step projects use readily available objects and equipment: learn how to make your own magnet out of a paperclip or a nail, or how to turn a bowl of water and needle into a compass. With this lively and practical book, young scientists will enjoy finding out about all the fantastic facts for themselves.