Simplified, mathematics is the study of numbers, patterns, space and change; but this is merely the tip of the spaceship - or the helicopter, the layout of the soccer field for next Saturday's game, the architecture of a new building, or new experiments..

- HippoCampusA free, core academic web site that delivers rich multimedia content--videos, animations, and simulations--on general education subjects to middle-school and high-school teachers and college professors, and their students, free of charge.
- Abstract AlgebraFree lecture videos by a Harvard professor on abstract algebra. These videos study the language of algebra through a study of groups, group actions, vector spaces, linear algebra, and the theory of fields.
- Virtual Math Lab: COLLEGE ALGEBRALaid out in outline format, a mix of videos and very clear explanations.