Jurtle

Jurtle is a simple integrated development environment for learning to program in the Java programming language. Perfect for teaching Java in a high school curriculum, for homeschoolers, or for individuals wanting to learn about programming on their own. With Jurtle you learn to program by writing code that moves a virtual turtle on the computer screen, drawing figures in its wake. 
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Parsnips

Parsnips allows you to easily store and keep track of all the useful bits of information you receive on your computer from various sources. When you encounter a piece of text you want to save and easily locate again, whether e-mail, the web, instant messaging, usenet, or local files, simply drag and drop it onto Parsnips. It will be saved and indexed for later retrieval using a simple yet powerful search engine interface.
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Population Applets

This set of applets teaches you a bit about Exponential and Logistic population growth. They were written several years ago and are presented here because many schools are finding them useful. Feel free to link directly to the sub-pages...