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Ed Carr has written 6 work(s)
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Describes how simple machines utilize the principle of the slope or incline to plow fields, unlock doors, and lift heavy loads
Hardcover:
9781568470177 | Thomson Learning, July 1, 1993, cover price $21.40 | About this edition: Describes how simple machines utilize the principle of the slope or incline to plow fields, unlock doors, and lift heavy loads
Explains the scientific principles behind electricity, discussing such aspects as static, circuits, batteries, and generators
Hardcover:
9781568470191 | Thomson Learning, July 1, 1993, cover price $21.40 | About this edition: Explains the scientific principles behind electricity, discussing such aspects as static, circuits, batteries, and generators
Hardcover:
9781568470160 | Reprint edition (Thomson Learning, July 1, 1993), cover price $21.40 | About this edition: Describes simples machines which utilize the principle of levers to move heavy objects, cut material, and make music
Hardcover:
9781568470153 | Thomson Learning, June 1, 1993, cover price $21.40 | About this edition: Explains how air and water pressure work and how they are used in machines
An introduction to wheels and how they are used in machines
Hardcover:
9781568470146 | Thomson Learning, June 1, 1993, cover price $21.40 | About this edition: An introduction to wheels and how they are used in machines
Outlines how, where, and what to look for while treasure hunting, ways to display finds and how to participate in archeological digs, and provides a reference section which contains club addresses, booklist and glossary.
Hardcover:
9780382064593 | Silver Burdett Pr, June 1, 1980, cover price $8.00 | About this edition: Outlines how, where, and what to look for while treasure hunting, ways to display finds and how to participate in archeological digs, and provides a reference section which contains club addresses, booklist and glossary.
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