established November 2010
Turtle graphics are a powerful tool for using computers to teach some sophisticated concepts in an age appropriate way to even young children.
For example, in the summer of 2008 I used LOGO to teach an advanced fifth-grader about fractals, recursion, functional programming, and removing repetition in an extremely small number of lines of code and in only a few hours at the computer. I wrote about that experience in detail here:
My main motivation for developing this library is to enable others to repeat those exercises in a web browser, especially on a mobile phone or tablet computer.
As of September 2011 I've got most of the tools I was hoping to build including a kind of command history and versioning, an interactive shell and some animation. See the live demo at http://dobbs.github.com.