The history of mathematics is told through anecdotal thumbnail sketches of the great mathematicians from antiquity forward to the 16th century. The information centers more on the math than on the men, describing the methods of experiment devised by each to arrive at or prove his theories. The tone of the text is that of direct information, simply explained. The necessary illustrations, however, are spoiled by small, heavily cartooned characters that divide the attention -- the reader must watch for the joke. The labeled diagrams and the photographs are far more successful in aiding the book's purpose of instruction. Each chapter has a summarizing quiz in the form of a page crowded with reduced pictures of illustrations already seen and captioned with questions. The last section of the book is devoted to the effect of mathematical discoveries on time-keeping devices, currency, the calendar and weights and measures. The scanning line, an effect of the format and type, is too long for reader comfort. There is a glossary and a bibliography (mostly British books) of introductory titles on this subject. An uneven effort of uncertain value at this age level.