Enchanted Learning
Enchanted Learning: The Planets
This survey of the planets includes all the basics, size, mass, atmosphere, length of day, and the like. It features interactive activities and learning exercises and compares all of the planets in colorful tables.
American Museum of Natural History
American Museum of Natural History: Ology: Cosmic Cookies
Roll your mouse over the planets in our solar system to read a vignette about each. Then, link to the recipe for directions to create miniature planet cookies that look like the real thing.
NASA
Nasa: Surface Maps of the Solar System
Solar system surface map database. Includes maps of all solid planets and many moons. Maps of gas planets are either based on images taken by Voyager, or are fictitious maps including general storm systems.
Quia
Quia: Brushing Your Teeth
This site gives you opportunities to practice putting the planets in the correct order from the sun. Press "Click here to begin" to get started.