A Mathematical Mystery Tour has been used by thousands of students and has inspired adults to greater appreciation of the secret number language of nature. It is multidisciplinary, visual, and hands-on, practicing skills while also requiring deep math thinking. The activities are reproducible and each is accompanied with informational teacher pages giving answers, historical notes, teacher suggestions, and activity extensions. Let this geographically alive Mystery Tour integrate math with art, science, philosophy, history, social studies, and language arts. The use of the calculator, geometric construction, metric measurement, problem solving, formulating results, building models and making inferences is woven throughout the book. Each book purchase includes a link to a downloadable student newspaper, the Mathematical Mystery Tour Guide , coordinated with the book content. It is capable of being broken up into various assignments and handed out as print or sent whole electronically to each student. It is filled with games, riddles, dramatic historical information, crosswords, provocative questions, and additional math thought activities.