[racket] classroom response system

On May 17, 2013, at 1:36 PM, Danny Heap wrote:

> A colleague has developed a classroom response tool that allows
> students to download exercises, write solutions, and then either
> visualize the execution of their solution or run unit tests, and then
> submit their solution.  The instructor can display a histogram of of
> the submissions that passed various tests, and then sample some of the
> interesting examples to discuss with the class (all this assumes
> wireless coverage for the classroom).
> 
> This is currently implemented for Python, but my colleague wants to
> extend it to other languages.  He has a student looking into the
> feasibility of implementing it for DrRacket, with the rough idea
> being:
> 
> 	-- Students and instructors run local instances of DrRacket
>           (hence access to the Stepper for student languages)
> 	-- Run the tests either client- or server-side in a sandbox
> 	-- Get files to/from DrRacket to server somehow
> 
> Since either students or the instructor will want to load files that
> are stored remotely (either starter code for exercises or student
> submissions), we're trying to figure out how DrRacket can open code
> that lives at a URL in the definitions pane.  Any suggestions are very
> welcome.  Also, anyone who is curious about the project is welcome to
> contact Andrew Petersen <andrew.petersen at utoronto.ca>.

Sounds very cool, and eminently do-able. Besides the existing stepper, I had a student that started looking at integrating DrRacket's stepper with Philip Guo's "Online Python Tutor". Let me know if you want pointers to some code.

John