Ancient Machine Technology: Working with Wedges and Wheels

By Michael Woods and Mary B. Woods

Ancient people used bows to drill holes and start fires. the ancient Chinese built a machine to detect earthquakes. the ancient Romans operated a factory for milling grain. Learn how ancient machines... This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 0761365230
• ISBN13: 9780761365235
• Release Date: January 2011
• Publisher: Twenty-First Century Books (CT)
• Length: 96 Pages
• Weight: 0.90 lbs.
• Dimensions: 0.4" x 7.0" x 9.1"
• Age Range: 12 to 15 years
• Grade Range: Grades 7 to 10