Fun, interactive, research-based simulations of physical phenomena from the Physics Education Technology project at the University of Colorado. Teacher ideas and activities are also available.
Developed specifically for Chemistry: The Science in Context, this student resource reviews chapter concepts. Animated tutorials help students visualize dynamic processes.
FantasyCongress.com works just like fantasy sports leagues except instead of sports players, you draft politicians who receive scores based on their legislation, votes, etc.
A colorful, graphically-enhanced interactive tool to guide students through the research process. Although geared toward a younger student visually, the information is still very relevant.