Download or read book Telling Time Through the Ages written by Rebecca Weber and published by Benchmark Education Company. This book was released on 2011 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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!