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How do you know what time it is?
By Wells, Robert V.
- ISBN
- 978-0-80757-940-4
- Publisher
- Morton Grove, Ill. : Albert Whitman, c2002.
REVIEWS
School Library Journal
Reviewed on January 1, 2003
Gr 2-4 This is a succinct, child-friendly history of how time came to be measured, from our early ancestors, who noted how the sun traveled across the sky, to the ancient Egyptians, who used "Shadow Stick clocks" to mark its path, through present-day quartz and atomic clocks. Wells discusses the Egyptians' lunar and solar calen...Log In or Sign Up to Read More
