Background
jLogo Programming
- Commanding a Turtle
- Pseudocode
- Adding New Commands
- Iteration & Animation
- Hierarchical Structure
- Procedure Inputs
- Primitive Operators
- Defining Operators
- Words & Sentences
- User Interface Events
- What If? (Predicates)
- Recursion
- Local Variables
- Global Variables
- Word/Sentence Iteration
- Words as Data
- Multiple Turtles
- Arrays
Java
- A Java Program
- What's a Class?
- Extending Existing Classes
- Types
- Turtle Graphics
- Control Flow
- Input Events
Appendices
Lastly
Me - a Short Bio
I have been working with computers for over thirty years. The first software that I worked on that was used commercially was device independent graphics software in the days when output devices were Calcomp drum plotters and Tektronics terminals. I went on to work on DECsystem-10 systems software, predominantly on the operating system, TOPS-10. Most of the interesting stuff I did was in the areas of performance analysis and tuning, cluster configurations, transaction processing, and robustness.
I moved over to Unix as soon as it became available on Motorola's MC68000 processor. As one of the founders of Inspiration Systems, I worked on the development of a new environment that blended proven mainframe database and third-generation application development tools with emerging productivity tools and technology, e.g. multi-window user interfaces, spreadsheets, etc... I was introduced to and worked on Sun-1 and Sun-2 workstations here.
I joined Sun Microsystems in 1986 as the first Systems Engineer in Pittsburgh, PA. I moved into SE management in 1988 and had a variety of territories in the Northeast through 1996. At this point, Sun decided to experiment with market verticalization. I took on the challenge of building a Systems Engineering team that supported sales into the education market, nation-wide. It was in this position that I found the topic of technology in K-12 to be intriguing. I spent my last year at Sun working in this area.
I'm currently semi-retired, researching curricula for introductory computer science, teaching a bit, reading a lot, and still rock climbing on occasion.
guy
(guyhaas at pacbell.net)
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The pictures of me climbing at the Gunks in the early 1990s were taken by Jeff Achey.
Buy his book "Guide to Climbing Photography here.
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