Mathematics is a beautiful and fascinating subject, which has aroused people's curiosity at least as far back as the time of the ancient Babylonians and Egyptians, four thousand years ago. This page is intended for anyone who enjoys mathematics. Below are links to mathematics articles and interactive web pages, aimed at a general audience.

## Articles |

- Modular Arithmetic Calculator - Perform arithmetic and find square roots modulo an integer.
- Big Integer Modular Arithmetic Calculator (Big MAC) - Perform modular arithmetic on very large integers, such as a googol (1 followed by a hundred zeros).
- Find the greatest common divisor of two integers using the Euclidean algorithm.

- Graph pro basketball statistics - a Perl interface to a MySQL database of professional basketball stats.
- Create distribution charts for pro basketball statistics.

- Graph a polynomial and its derivative.
- Plot the trajectory of a cannonball for a given muzzle velocity and angle of elevation.
- Graph solutions of the Lotka-Volterra equations, a differential equations model for predator-prey interactions.

- Draw graphs of ellipses with varying parameters.
- Convert angles between radians and degrees.

And last but not least, a list of my math research publications.