People used sundials and calendars to keep track of time long before the invention of stylish wristwatches and radio alarm clocks. This book provides kids with an in-depth look at the development of both ancient and modern-day timepieces. Have you ever wondered what life was like before telephones or cars? It's easy to take for granted the inventions that have had such huge impacts on our everyday lives. With the help of The Timeline Library, children can visualize the development-and grasp the monumental impacts-of some of the most influential innovations in history. Presented in a timeline format that combines biography, science, history, and social studies, each book offers young readers a unique perspective from which to view the course of human history. Kids will emerge with a well-rounded understanding of how these inventions have played an indelible role in shaping our past, present, and future.
