The MegaPenny Project - The MegaPenny Project aims to help by taking one small everyday item, the U.S. penny, and building on that to answer the question: "What would a billion (or a trillion) pennies look like?"

Topics in Mathematics

History Topics - Math - Mathematics in various cultures and an overview of the history of mathematics.
MacTutor History of Mathematics - Biographies of mathematicians and history of mathematics.

Advanced Algebra

Abstract Algebra Online - This site contains many of the definitions and theorems from the area of mathematics generally called abstract algebra.
Fibonacci Numbers and Nature
The Fibonacci Numbers and the Golden section

Geometry

Geometry in Action - Explore various areas in which ideas from discrete and computational geometry meet real world applications.

Additional Links

Mr. Bergman's Masters project: "Mathematics Education in a Reformed, Christian School" and a project summary: "Battling the Humanists of Mathematics"