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How Do You Know What Time It Is?

Published
Sep 2013
Main Genre
General Fiction General Fiction
Pages
32

About This Book

What would life be like with no clocks and no calendars? How would you know when to get up in the morning? How would you know when baseball season was about to start? Long, long ago, all people could do was watch the sun and moon and try to figure things out. Eventually, they made simple clocks like sundials. And as time marched on, people came up with more ways to measure it. Today, quartz crystal watches and atomic clocks tell us EXACTLY what time it is, at any moment, all over the world.

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Hardcover

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First Edition Sep 2013 Av2 by Weigl ISBN 1621278808
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eBook

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Nov 2014 Albert Whitman & Company ISBN B00P8KP6HE
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Nov 2014 Albert Whitman & Company ISBN 1504000420
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Nov 2014 Albert Whitman & Company ISBN 1504000625
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Nov 2014 Albert Whitman & Company ISBN 0807579416
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Nov 2014 Weigl Publishers Inc. ISBN 179110522X
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