Ceresco said:They DIDN'T have the wheel.
For good insight into the Mayan cosmology and the importance of astronomy I reccommend "Maya Cosmos: Three Thousand Years On THe Shaman's Path" by Freidel, Schele and Parker. Published 1993. I have seen it in paperback at major book retailers. It explains how the Mayans looked at the rotation of the Milkyway and how it tells the story of the Mayan creation myth.
Hope that will help.
Well they did have the wheel but since they didn't have any beasts of burden they didn't use it for useful tools/work. But you did find wheels on toys and the like.