http://www.elbalero.gob.mx/index_kids.html
Mexico for Kids: Official site from the Mexican government to learn about the land, people and culture of Mexico. Includes history, government, news and games.

http://www.mayankids.com/mmkpeople/index.html
Scholars agree the Maya were the most advanced of all ancient Mesoamerican cultures. They developed astronomy, calendar systems and writing. They built elaborate pyramids and observatories, all without metal tools. They were highly skilled as potters and weavers. Their centres began to decline around AD 900, for reasons still unknown.