One of the greatest ways technology can empower teachers is by helping them demonstrate concepts and by making it easier for students to learn through their own exploration and experimentation.

Because science teachers are often called upon to teach topics that are too large, too small, happen too fast, happen too slowly, require equipment that is too expensive, or has the potential to blow up a laboratory, the Internet can be particularly helpful in assisting them convey a concept.

Universities, non-profit organizations and scientists with free time have put an overwhelming number of resources for teaching science on the web. These are nine of our favorites.