This book allows you to present scientific principles and simple mechanics through hands-on cooperative learning activities. Using inexpensive materials (e.g., tape, paper clips), students build simple machines-such as levers, pulleys, spring scales, gears, wheels and axles, windmills, and wedges-that demonstrate how things work. Activities have easy-to-locate materials lists, time requirements, and step-by-step directions (usually illustrated) on presentation. Ideas for bulletin boards, learning centers, and computer-assisted instruction are an added bonus.
This is a well written resource book designed for teachers who might be "shy" about teaching simple machines. EVERYTHING you need to teach a great unit is provided: reproducables for learning centers, material lists, and a variety of assessment tools. I especially liked the section on building pulleys, spring scales, etc. Even teachers with a solid working knowledge of simple machines could benefit from this book.
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