Math Through the Ages: A Gentle History for Teachers and Others

"Where did maths come from? Who thought up all those algebra symbols, and why? What's the story behind pi? ...negative numbers? ...the metric system? ...quadratic equations? ...sine and cosine? ...logs? The 30 independent sketches and 58-page historical overview in Math through the Ages answer these questions and many others in an informal, easygoing style that's accessible to teachers, students, and anyone who is curious about the history of mathematical ideas."--Page 4 of cover.