Applied Mathematics

A concise and reliable reference for engineering principles, processes, materials, and mathematics.

A collection of 52 videos on physical concepts by Dr. Walter Lewin, MIT Professor Emeritus.

Free online tutorials for students of algebra and geometry; calculus and advanced math; and statistics and probability.

More than 1800 electronic blackboard videos dealing with all aspects of geometry, statistics, pre-calculus, calculus, chemistry, and physics.

Help with geometry, algebra, calculus, differential equations, physics, set theory, and probability and statistics.

Provides an interactive guide to special functions in applied mathematics for use in science and engineering.

Project Euler allows users to test their math skills against "challenging mathematical/computer programming problems that will require more than just mathematical insights to solve." Registration is free.

The internet's most extensive guide to mathematics.

Open access to nearly 3.5 million English-language abstracts from the 'Jahrbuch uber die Fortschritte der Mathematik' (1868-present).

A free online integrator that can be used for integrals, equations, derivatives, and plots.

Convert just about anything to anything else. Over 5,000 units, and 50,000 conversions.