Discovery Education
Discovery Education: Science Fair Central: Validate Topic
A small collection of questions students should ask themselves as they think about the topics they want to explore in their science fair projects.
Science Struck
Science Struck: Ideas for High School Science Fair Projects
A long list of ideas for science fair projects for high school students.
Cyberbee
Cyber Bee: Science Fair Preparation
A good starting-point for students preparing to participate in a science fair. Find tips for choosing a topic, managing your time, and creating a good display.
Lawrence Hall of Science
University of California: Lawrence Hall of Science: Howtosmile
A free collection of math and science activities, games, and lessons that teachers can search by topic and grade level.