For a description of my career and qualifications, check out my resume.

My current work is hosted by Halff Resources, a firm that I founded in 1999. Check out it's web site for more information.

I also have a few papers, published and unpublished, on-line. They probably won't mean much to you unless you're familiar with the field of instructional technology.

A good introduction to work on generating instruction on the fly is in a paper entitled "Four Easy Pieces: Development Systems for Knowledge-Based Generative Instruction," that Pat Hsieh, Carol Redfield and I wrote for the International Journal of Artifical Intelligence in Education. You'll need a subscription to the journal to get past the abstract, but you can write me for a reprint.

Also in the same journal is ITSs into the Sunset, a radio play that takes a light-hearted look at some of the issues associated with computers and instruction.The piece is free to non-subscribers.

Also philosophical and light-hearted in tone is What Happened to the Calligraphers, an unpublished Just-So Story that I wrote about the course of technological progress.

If you want to know how to build a computer game to teach science, check out, Adventure Games for Technical Education, a paper written after I built one that actually worked (kind of).