http://www.sciencebuddies.org/
http://school.discoveryeducation.com/sciencefaircentral/
http://www.all-science-fair-projects.com/
http://www.sciencefair-projects.org/
http://science.dadeschools.net/scifair/default.htm
http://faculty.washington.edu/chudler/funsciencefairprojects.html
http://biology.about.com/library/weekly/aa032201a.htm
http://www.crystal-clear-science-fair-projects.com/
http://www.apa.org/ed/topss/sciencefair.html
http://www.apa.org/ed/topss/scifair_manual.pdf
http://www.doscience.com/act_archive/index.html
http://www.ipl.org/div/kidspace/projectguide/
http://www.all-science-fair-projects.com/
http://www.education.com/science-fair/all-grades/
http://www.super-science-fair-projects.com/