This comprehensive publication was created to extend the Denver Museum of Natural History's exhibition "AZTEC: The World of Moctezuma" into the classroom, but can be used independent of the exhibition. Text and activities allow students to explore the Aztec empire, everyday life and work, the art and architecture, and finally, the conquest of the Aztecs. Each chapter includes four to five pages of background information and a set of related activities adapted for three levels: elementary (grades 4-5), intermediate (grades 6-8), and secondary (grades 9-12). The background essays are intended for teacher use, but may be copied and read by secondary students (or by intermediate students who read above grade level). The activities are coded for easy reference: elementary pages are circles, intermediate are squares, and secondary are triangles. This resource book can be used as a complete unit, or can by incorporated into a more personal curriculum. The five instructional chapters are: (1) "The Empire of the Fifth Sun"; (2) "Everyday Life Among the Aztecs"; (3) Working in the Aztec Empire"; (4) ""Architecture and Art of the Aztecs"; and (5) "The Fall of the Aztec Empire." Includes 10 teacher resources for further reading. (DQE)