Science Fair Central--Lots of topics covered in class. http://school.discovery.com/sciencefaircentral/scifairstudio/ideas.html
Science Fair Projects from ScienceHound http://www.all-science-fair-projects.com/
Top Science Fair Projects http://www.top-science-fair-projects.com/
Science Experiments to do at Home http://www.hunkinsexperiments.com/default.htm
Science Bob--There are experiments to do at home as well as topics to explore. http://www.sciencebob.com/
Thinking Fountain Experiments, Pictures and Information http://www.sci.mus.mn.us/sln/tf/nav/thinkingfountain.html
KidZone Science http://www.kidzone.ws/science/index.htm
Science Projects to Do at Home http://members.ozemail.com.au/~macinnis/scifun/miniexp.htm#20
Exploratorium--Science Experiments in different areas of Science. Click on a topic of interest and complete an experiment. http://www.exploratorium.edu/snacks/snacksbysubject.html
Try Science At Home--Fun experiments to do at home and in school, virtual field trips, lots more. http://www.tryscience.org/experiments/experiments_home.html
Science Guy: Bill Nye http://www.billnye.com/
Science Fair Projects and experiments--references to all branches of Science http://www.juliantrubin.com/
Reeko's Mad Scientist Lab--lots of projects and experiments http://www.spartechsoftware.com/reeko/
My Science Site--lots of ideas and links for projects. http://www.mysciencesite.com/sf.html
Cool Science Projects--projects with directions for different grade levels. http://www.cool-science-projects.com/Science-Fair-Project-Ideas.html
Funology--Ideas for Science experiments and projects http://www.funology.com/
Mad Scientist 2000--Experiments written using the scientific method format. http://library.thinkquest.org/J001796/2page.htm
Science Buddies--Good science fair projects and explanations in different areas of Science. Projects are leveled for the different grades from primary (easiest) through high school (most difficult). http://www.sciencebuddies.org/mentoring/science-projects.shtml
Knowledge Bears--great site to learn about animals, dinosaurs, the ocean, and geography. http://www.kbears.com/