NASA Jet Propulsion Laboratory Lots of photos from current and past robotic exploration of space. Includes information and photos of all our planets. The Science House learning materials Activities designed to use in classroom. These are geared to using easily available materials. Chemistry, physics, earth sciences Project Dragonfly Children's science magazine, each issue deals with one topic.
Most entries contain information and one activity.
Using the internet for web-based activities Journey North Interact with students and experts to track the migration of North American animals. Lots of opportunities to extend the basic activities, includes map reading, biology, math, social studies.