Article
University of St. Andrews (UK)

University of St. Andrews: Mayan Mathematics

For Students 9th - 10th
After a historical introduction, this site from the University of St. Andrews provides information about the mathematics of the Maya Civilization and shows just how advanced they were.
Handout
The History Cat

The History Cat: Mayan Achievements

For Students 9th - 10th
Discusses the Maya system of astronomy and their calendar.