Math and Symbolic Reasoning
Computer Programming in PHP  See
how similar PHP code is to an algebra quadratic form equation
Poll Data Margin of Error  Several
years of algebra is a prerequisite to working with the fairly
straightforward formula used to establish poll data margins of error.
Standard Deviation Formula 
Algebra and calculus are helpful in understanding this formula.
National Security  Knowledge
of Abstract Algebra is essential at the National Security Agency
Secret Codes Lesson 1  A
simple code that advances each letter 2 places.
Secret Codes Lesson 2  The
code generator for the 2letter shift of Lesson 1 and explanations.
Secret Codes Lesson 3  An
improved code that advances each letter 2 places.
Secret Codes Lesson 4  The
code generator for the improved code of Lesson 3 and explanations.
Secret Codes Lesson 5  An
advanced code that transposes letters. This code is difficult to
"break".
Secret Codes Lesson 6  The
code generator for the advance code of Lesson 5 and explanations.
Secret Codes Lesson 7 
Instructions on how to create your own unique code.
