What's special about 21 through 30?

Newsletter number 24 ; Wednesday, January 5,2010

The eight queens puzzle

Newsletter number 23 ; Wednesday, December 29, 2010

What's special about integers 11 through 20?

Newsletter number 22 ; Wednesday, December 22, 2010

What's special about numbers 0 through 10?

Newsletter number 21 ; Wednesday, December 15, 2010

Reciprocal is sum of reciprocals.

Newsletter number 20 ; Wednesday, December 8, 2010

The Impossible Puzzle

Newsletter number 19 ; Wednesday, December 1, 2010

Reducible fourth degree polynomials

Newsletter number 18 ; Wednesday, November 24, 2010

Modular Doodling

Newsletter number 17 ; Wednesday, November 17, 2010

The five fifth roots of 1.

Newsletter number 16 ; Wednesday, November 10, 2010

Fractional Derivatives

Newsletter number 15 ; Wednesday, November 3, 2010

Calculus Overview

Newsletter number 14 ; Wednesday, October 27, 2010

sum of squares equal to square

Newsletter number 13 ; Wednesday, October 20, 2010

Special factoring of positive integers

Newsletter number 12 ; Wednesday, October 13, 2010

Constructing Algebraic Identities

Newsletter number 11 ; Wednesday, October 6, 2010

Solving Quadratic Equations

Newsletter number 10 ; Wednesday, September 29, 2010

Vector Numbers

Newsletter number 9 ; Wednesday, September 22, 2010

Sum of same power of consecutive integers

Newsletter number 8; Wednesday, September 15, 2010

Generating prime integers in sequence

Newsletter number 7; Wednesday, September 8, 2010

Introducing prime integers

Newsletter number 6; Wednesday, September 1, 2010

Division by Zero

Newsletter number 5; Wednesday, August 25, 2010

Meaning of Equality

Newsletter number 4; Wednesday, August 18, 2010

Remainder Arithmetic

Newsletter number 3; Wednesday, August 11, 2010

Algebraically derived numbers

Math Newsletter number 2; Wednesday, August 4, 2010

Extending the number system

Math Newsletter number 1; Wednesday, July 28, 2010

Multiplication Table