Interesting Math Sites:
Golden Ratio
Misc. Interactive Math
Gorgeous Version of Euclid's Elements
Wolfram Mathematics
Geometry: The Motion of Shapes
Interactive Trig (Unit Circle) Tool
Pythagorean Theorem & More
More Pythagorean Theorem
Ask Doctor Math
Paper Folding Geometry
Paul's Page of Pi

Learning & Thinking Skills:
Problem Solving Strategies
50 Problem-Solving Strategies

Career & Personality Profiles:
About Taking Career Tests
Jung Typology Test

More to come. . .