General Math Resources

Ask Dr. Math – http://mathforum.org/library/drmath/drmath.middle.html
Browse archives of previously asked questions and answers about middle school level math. You can even submit your own math question.

Mathematician Biography Index – http://www-groups.dcs.st-and.ac.uk/~history/BiogIndex.html
Locate information on mathematicians by searching by name or date range.

Calculators and Conversion

Universal Currency Converter http://www.xe.com/ucc/

Measure 4 Measure http://www.wolinskyweb.net/measure.htm

Convert Me  http://www.convert-me.com/en/

Math Remedies

Discovery School Webmath http://school.discovery.com/homeworkhelp/webmath/

SOS Mathematics http://www.sosmath.com/index.html