SCIENCE
Wells, Robert E.

How Do You Know What Time It Is?

(4) K-3 The development and use of time-measuring tools--from the shadow sticks of ancient Egypt to today's atomic clocks--are described in hand-lettered text that curves and bends around cartoony pen-and-acrylic illustrations. Unfortunately, the book then introduces discussions of the moon's phases, the Earth's seasons, and the nature of time itself, topics too complex for the simple format.

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