The Mayan calendar was one that calculated the end of the world. It once brought historians, philosophers and thinkers fear of the coming doom. In this book, ho

Captain Amos January and his rivals struggle to obtain an ancient pre-human artifact of great power that incites murderous actions in those who seek it.

Calendar Math provides an opportunity to practice writing numbers for a practical purpose, learning to read a calendar, provides and opportunity for thinking an

The bestselling workbook and grammar guide, revised and updated! Hailed as one of the best books around for teaching grammar, The Blue Book of Grammar and Punct

Mesoamerica is one of the few places to witness the independent invention of writing. Bringing together new research, papers discuss the writing systems of Teot