Some Good Online Lectures:
Physics 10: Physics for Future Presidents (Richard Mueller)
Some of Richard Feynman's Lectures: Microsoft's Project TUVA
CalTech Lecture Videos
Some Neat Math & Physics Animations:
Mathematics Animated
Physics Flash Animations
The i-Rational Theorist: Math
Interactive Physics Game
Here are tons of neat "Do It At Home" Physics Experiments:
Home Physics Demos: University of Melbourne
Technology Underground: Sam Barros Powerlabs
Then there's this:
How Stuff Works
Universe Review
Encyclopedia of Science
Answers - List of Engineering Topics
Web Elements
MIT Course Materials
Ronas Chemicals
Wolfram's Mathworld
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