Science Buddies (http://www.sciencebuddies.org)

Any science fair-veteran knows that the most important task is coming up with a good project idea. Choose a good experiment -- one that generates data that's easy to measure and a hypothesis that's simple to test -- and the task will go smoothly. But picking a subject that sounds interesting but hard to execute is a recipe for late-night stress and confusing results. Science Buddies makes that critical first step easier. Its extensive list of projects, organized by subject and difficulty level, will offer something for almost any student, and the detailed instructions provide a step-by-step guide of what to do, and a careful explanation of what people should learn in the process. The site makes science fun and interesting, a valuable service to both students and teachers.