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Telling Time Through the Ages
Rebecca Weber
出版Benchmark Education Company, 2011
主題Juvenile Nonfiction / Concepts / Date & TimeJuvenile Nonfiction / Readers / Beginner
ISBN14509066809781450906685
URLhttp://books.google.com.hk/books?id=2p7ViGGMSLUC&hl=&source=gbs_api
EBookSAMPLE
註釋Approximately 5,000 to 6,000 years ago, people began to make clocks: tools that can precisely mark off equal lengths of time. In this book, you will find out about several types of clocks invented throughout history. You will also discover that you can make some of these clocks yourself by following step-by-step instructions. You will even measure your body clock!