LIMITED TIME SPECIAL OFFER—SAVE 20% on Every Book Store-wide!Award-winning science writer Gloria Skurzynski takes young readers on a fascinating tour through the history of time measurement. She shows how humans learned to recognize time and measure it in smaller and smaller units—from Stonehenge, which marked the equinoxes; to Egyptian obelisks, which measured the hours; to modern-day atomic clocks, which split seconds in miniscule fractions.
- Ages 8 and up
- 48 pages; 40 full-color photographs
- 8 1/2'' x 10 7/8''
- Hardcover
- © 2001
