definitions of economic terms http://www.amosweb.com/cgi-bin/gls_src.pl
another dictionary of economic terms http://users.chariot.net.au/~ecoteach/dicteco.htm
Today in History Links http://memory.loc.gov/ammem/today/archive.html
New York Times "On this Day" http://www.nytimes.com/learning/general/onthisday/
easy bibliography for your usage http://www.easybib.com/
5 Themes of Geography http://www.mtps.com/middle/socsci/5themes/
"It's About Time" http://physics.nist.gov/GenInt/Time/time.html
"Time & Again" http://www.time.gov/
How To Prepare an annotated Bibliography http://www.library.cornell.edu/okuref/research/skill28.htm
More Writing & Documentation Tips http://www.hamilton.edu/Writing/style
Primary Source Guidelines http://www.lib.berkeley.edu/TeachingLib/Guides/PrimarySources.html
Teaching with Documents http://www.archives.gov/digital_classroom/teaching_with_documents.html