Basic Mathematics

[Astronuc]

This seems useful.

Arithmetic
http://www.bymath.com/studyguide/ari/ari_topics.html

Algebra
http://www.bymath.com/studyguide/alg/alg_topics.html#Principles

Principles of vector calculus
http://www.bymath.com/studyguide/alg/sec/alg25.html

Lots of good stuff there.

[Astronuc]

Introduction to Mathematics and Algebra
http://www.tpub.com/math1/index.htm

Pre-Calculus and Intro to Probability
http://www.tpub.com/math2/index.htm

[chrisdimassi]

Standard Deviants (http://www.pbs.org/standarddeviantstv/) programs seem to be informative in content. Their approach makes the learning more memorable although there's a limit to the intensity of what they cover. It seems like a good refresher for returning students. Local libraries have them too, I think.

[Astronuc]

Some useful basic math -

http://argyll.epsb.ca/jreed/math7/

http://argyll.epsb.ca/jreed/math8/index.htm

Geometry - Surface Area and Volume of Composite Solids
http://argyll.epsb.ca/jreed/math8/strand3/3208.htm

http://argyll.epsb.ca/jreed/math9/

[liberandos]

Another currently free site with what seems to be hundreds of video lessons available.

www.mathtv.com

Spanish too.

[nysphere]

I am working on a math video help site. We have over 1500 free math video clips already. The number will reach to 2000 by Fall 2008. Take a look. Sincerely.

http://tulyn.com/

[Kingarthur]

I don't know if this is what's called basic mathematics, but I've found this site useful: http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/index.htm. I can vouch for it. It has Beginning Algebra, Intermediate Algebra, and College Algebra; and some GRE and THEA test stuff. This is a good thread for these links. Here's 2 more to keep it stocked: http://online.math.uh.edu/Math1330/index.html and http://www.math.washington.edu/~m120/.

[jhooper3581]

See this link (http://www.math.com/).