Crayola
Crayola: Extraterrestrials Visit Earth (Lesson Plan)
Your students will love wrapping up a solar system unit with this activity! Children make their own "Travel brochure," about earth, trying to encourage extraterrestrials to visit, by comparing our planet to theirs. This lesson plan also...
Exploratorium
Exploratorium: Museum of Science, Art and Perception
This museum provides numerous online exhibits about everything from the science of sports to the Hubble Telescope. Each exhibit includes learning ideas, fun activities, articles, and learning games.