Mathematics: A Research Guide

MathWorld
An online comprehensive and interactive encyclopedia of mathematics. Categories listed are Algebra, Applied Mathematics, Calculus and Analysis, Discrete Mathematics, Foundations of Mathematics, Geometry, History and Terminology, Number Theory, Probability and Statistics, Recreational Mathematics, and Topology.

Math Archives
Presents organized links for both students and teachers. The linking ranges from mathematical topics, to teaching materials, software and other helpful links. Topics are labeled at various levels of difficulty and interactivity: HS (High School), LD (Lower Division College) Int (Interactive) or Java (Java enhanced).

Mathematical Functions
Internet resource of mathematical functions traditionally published as tables of functions, formulae and graphs. These include elementary and special functions that are significant not only in mathematics but also in the natural sciences, engineering, and other fields.