National Earth Science Teachers Association
Windows to the Universe: Jupiter's Moons and Rings
Windows to the Universe of the University of Michigan gives a brief introduction to Jupiter's rings. The information can be accessed in a beginner, intermediate, or an advanced setting.
Enchanted Learning
Enchanted Learning: Saturn
Enchanted Learning profiles the planet Saturn with information about size, mass, atmosphere, length of day, and so on. There are also interactive activities and learning exercises.