Visit these websites for possible ideas for science fair projects:

http://www.ipl.org/youth/projectguide (Internet Public Library)
http://www.ars.usda.gov/is/kids/fair/ideas.htm (Agricultural Ideas for Sci.Fair)
http://www.stemnet.nf.ca/sciencefairs (School Science Fairs Home Page)
http://www.sciencepage.org/scifair.htm#top (The Science Page- Science Fair)
http://school.discovery.com/sciencefaircentral (Discovery School Sci. Fair Central)
http://www.scifair.org (Ultimate Science Fair Resource)
http://www.ascpl.lib.oh.us/scifair (Science Fair Projects Index)
http://howstuffworks.com (How Stuff Works)
http://sciencegems.com (Frank Potter's Science Gems)
http://www.middleschoolhub.org/school/school.cfm  (Middle School Hub - click on Science Stuff)
 

Visit these websites for possible ideas for History Day Projects:

http://educate.si.edu/turningpoints/index.htm - Smithsonian
http://memory.loc.gov/ammem/ndlpedu/histday/index.html -Library of Congress
http://www.nara.gov/education/historyday/frontier/2001.html - National Archives
http://www.neh.gov - National Endowment for the Humanities
http://edsitement.neh.gov/history.html?all - Education site for the Smithsonian
http://www.ohiohistory.org/links/index.html - Ohio History Day Online Links
http://www.ohiohistory.org/resource/index.html - Ohio History Day  Resources
http://www.thehistorynet.com/NationalHistoryDay/ - National History Day