[plt-scheme] interactive lecture tool

One thing I like to do in lecture is ask students to work on something  
in groups and then we all discuss it. Sometimes I even ask them to  
work at the board.

One thing that would make this work even better with Dr. Scheme, would  
be an easy to use "Post Definitions Window" button that would allow  
students who I ask to do so to "post" a buffer to a new open file in  
the Dr. Scheme running on my laptop. (Or even right into the currently  
open file there.)

Has anyone developed anything like this?