Canadian Museum of History
Canadian Museum of History: Maya Civilization
Lots of information about many facets of the Maya civilization. Covers the history, people, geography, languages, cities, society, cosmology, the calendar, and lots more. Includes a glossary and a timeline.
Other
The Maya Calendar: A Converter
Gives the Mayan days and months. In addition, a Java Applet is included which will convert any date (Gregorian calendar) to its corresponding Mayan date.
The History Cat
The History Cat: Mayan Achievements
Discusses the Maya system of astronomy and their calendar.
Other
Mayan Monuments and Rubbings
A series of photos and rubbings from Mayan stone calendars and standing stones (stelae) that could be used as primary sources for a unit on Mayan history.