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How do you know when it is time to wake up, go to school, or celebrate your birthday? We use clocks and calendars every single day, but people have not always had such easy ways to measure the passing moments.
Journey back through history to discover the clever and fascinating ways humans first learned to tell time. You will explore a world of incredible inventions, from ancient hourglasses filled with sand to the super-accurate atomic clocks we use today.
Packed with amazing photographs and fun facts, this book reveals why keeping track of time is so important for communication and everyday life. It is the perfect adventure for curious minds who want to know how our world stays in sync.
6-8 Years
23 Pages
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