The book analyzes the mathematical tablets from the private collection of Martin Schoyen. While some tablets are familiar, many contain fascinating new material. The author translates their mathematical content, compares it with previously known material, then evaluates the period of the tablet and its purpose. This allows the author to provide new insights into the interpretation of some classical tablets, as for example Plimpton 322. What makes this book so unique is the light being shed on Babylonian mathematics, including new evidence of Babylonian familiarity with sophisticated mathematical objects, such as the knowledge of the three dimensional Pythagorean equation and the geometry of the icosahedron. Another very important finding is the use of the zero notation in novel contexts and periods. The book is carefully written and organized, with useful drawings and pictures of the most interesting tablets. The book will be of interest to assyriologists, mathematicians, and historians of science.