**Algebra**

Getting a "Bee" in Math Class (October 2008)

It is a Piece of Cake (August 2008)

Variables, Spreadsheets, and Real-World Problems (March 2008)

Serving Up Sierpinski! (January 2006)

Adding à la Gauss (October 2004)

Magic Squares: Discovering Their History and Their Magic (April 2001)

**Arithmetic**

Getting a "Bee" in Math Class (October 2008)

Multiplication from Lilavati to the Summa (December 2001)

Zero: A Special Case (January 2001)

Equity and Diversity

A Dozen Ways to Celebrate Mathematician of the Month (February 2007)

**Geometry**

Getting a "Bee" in Math Class (October 2008)

Reflecting, Translating, and Rotating Points on a Graph (December 2007)

Mathematics and Visual Arts: Exploring the Golden Ratio (April 2007)

Serving Up Sierpinski! (January 2006)

Eureka! Or Don't Throw Out the Crown with the Bathwater (May 2003)

Euclidean Tools and the Creation of Euclidean Geometry (January 2002)

**Graphs**

Reflecting, Translating, and Rotating Points on a Graph (December 2007)

The Other Life of Florence Nightingale (February 2002)

**Mathematical Connections**

It is a Piece of Cake (August 2008)

Variables, Spreadsheets, and Real-World Problems (March 2008)

Mathematics and Visual Arts: Exploring the Golden Ratio (April 2007)

Historical Roots of Our Calendar (December 2002)

**Measurement**

It is a Piece of Cake (August 2008)

What If We Were Built Like the Dinosaurs? (November 2007)

Serving Up Sierpinski! (January 2006)

Eureka! Or Don't Throw Out the Crown with the Bathwater (May 2003)

Multicultural Mathematics

A Dozen Ways to Celebrate Mathematician of the Month (February 2007)

Understanding Aztec and Mayan Numeration Systems (August 2006)

The Influence of Ancient Egypt on Greek and Other Numeration Systems (November 2003)

Multiplication from Lilavati to the Summa (December 2001)

Magic Squares: Discovering Their History and Their Magic (April 2001)

Zero: A Special Case (January 2001)

Number Sense

Historical Roots of Our Calendar (December 2002)

**Number System**

The Mystery of the Disappearing Calculators (November 2008)

Get "Primed" to the Basic Building Blocks of Numbers (September 2007)

Understanding Aztec and Mayan Numeration Systems (August 2006)

The Influence of Ancient Egypt on Greek and Other Numeration Systems (November 2003)

Zero: A Special Case (January 2001)

**Number Theory**

Get "Primed" to the Basic Building Blocks of Numbers (September 2007)

A Look at Some Numbers of Old: Perfect, Deficient, and Abundant (February 2005)

Zero: A Special Case (January 2001)

**Patterns**

Getting a "Bee" in Math Class (October 2008)

It is a Piece of Cake (August 2008)

Serving Up Sierpinski! (January 2006)

Probability

Looking at Probability through a Historical Lens (September 2000)

Ratio and Proportion

Mathematics and Visual Arts: Exploring the Golden Ratio (April 2007)

Statistics and Data Analysis

The Other Life of Florence Nightingale (February 2002)

**Technology**

Variables, Spreadsheets, and Real-World Problems (March 2008)

Looking at Probability through a Historical Lens (September 2000)