Enchanted Learning
Enchanted Learning: Zoom Astronomy: All About Space
A fantastic collection of information about the solar system. Includes information on all of the planets, the moon, the sun, asteroids, comets, meteoroids, and stars. Also find puzzles, a dictionary, quizzes, classroom activities, and...
University of California
Uc Berkeley: At Home Astronomy: The Size and Distance of Planets
In this activity, "You will investigate the concepts of relative size and distance by creating a basic model of our solar system." Planet printouts are provided and this site contains related links.