Math.com great math site with links to some fascinating stuff.

Maths dictionary for kids

The MacTutor History of Mathematics archive I found fascinating.

Fermat's Last Theorum
Calculus on the Web, interactive well designed tests and explainations
A Maths page

About statistics A great site with theory and interactive models about statistics
Basic Stats online text

Rachel Fewster's excellent links, lecturer in the Statistics Department of the University of Auckland

Ops Mngmt & SPC: unh.edu notes, tamu-commerce.edu slides & smsu.edu slides
Modelling and Decision Support tools - alphabetic index
Data presentation (Auckland University)
SPC & excellent links to control chart stuff.
Leader HQ: The Web's Management Library

Production and operations management experiential learning activities and games by Ron Wright and Salwa Ammar at Le Moyne College in Syracuse, NY.
Variation on the Deming Red Bead experiment
Deming's Red Bead Game, 14 points and some SPC
Text script for game
Word document for game
Puzzle to consolidate theory [maybe]
What is really causing the problem
Dr. Deming's Theory of Profound Knowledge
Thoughts about variation
StatsHelp for Cpk, etc
Taguchi methods - quality vs cost
Quality Progress, Quality Digest
SkyMark management / quality references

Marketing Teacher with interesting management tutorials