The Josephus Problem with source code in C++ [May 20, 2010]
Derivatives 1: Related Rates [January 29, 2010]
This article demonstrates the position function for falling objects and its derivatives, velocity and acceleration, with respect to time.
Timed Test Generator
I have written a customizable generator for arithmetic timed tests and drills. It is free software, and you may find it here along with source code.
Deriving e Using the Limit Definition
Perl snippets and e
Here are two Perl snippets to play with e approximations (e.pl, e2.pl). The first attempts to find e by the infinite series definition. The second uses the limit definition. The limit definition seems slower to converge. (2/2009)
Newton's Law of Cooling, derived and demonstrated by example