Math Sites

General

More reliable math sites than the tentatively offered one here include…

• Proofs in Mathematics from Cut the Knot
• PlanetMath.org: “Math by the people, for the people”
• About Proofs from Dr. Math
• Math Proofs on Blogspot: only 17 postings, none since July 2006, but gets a high Google ranking.
• Platonic Realms Interactive Mathematics Encyclopedia
• MathWorld by Eric Weisstein via Wolfram
• Encyclopaedia of Mathematics from SpringerLink.

Specialized

• Experimental Mathematics Website
• Michael Beeson's publications on automated reasoning and proofs
• Computational logic notes (fall 2007) by Michael Genesereth for his CS157 course at Stanford University
• Genesereth also runs Logica, a site of on-line logic tools including truth tables, converters, unifiers, resolution tool, Epilog, and editor.

On-line tests

• Online Math Tests Home Page, Department of Mathematics, University of Missouri-Columbia, prepared by Professor Elias Saab: College Algebra Test (MPECA), Prepare for The MMPT at MU, Take a Calculus Readiness Test, Take a Trigonometry Test, Geometry Test, and an Algebra Test.

List of lists

StumbleUpon's Outerplaner has a long list of math-related links and on-line books.

And the reason you should consult other sites is the topic of my…