Timekeeping: Explore the History and Science of Telling Time travels through the past and into the future to explore how humans have measured the passage of time. From ancient civilization's earliest calendars and shadow clocks to GPS and the atomic clocks of today, kids will track the evolution of timekeeping devices, meet the inventors of calendars and clocks, and learn interesting facts and trivia. Hands-on projects and activities include making a shadow clock, using a protractor to create a sundial, measuring time using water, and creating your own calendar. Kids will understand how civilization's vague abilities to track days and months has transformed over the centuries into a sophisticated ability to keep time to the millionth of a second.
This is Book 39 in the Build it Yourself Series. See all Build it Yourself books here.
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Linda Formichelli is a freelance writer whose articles have appeared in several youth and science publications including Ack!, Delta Education, Odyssey, Yes, and Zillions. She is the author of Becoming a Personal Trainer for Dummies, Renegade Writer, and a coauthor of Tools of Timekeeping. W. Eric Martin has written articles for more than 50 publications an
More about Linda FormichelliSam Carbaugh is a freelance cartoonist and illustrator. He has illustrated several books for Nomad Press, including Forensics: Uncover the Science and Technology of Crime Scene Investigation and Robotics: Discover the Science and Technology of the Future. He works with many colleges and companies to create informational comics and illustrations. Sam lives in
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