A fast update: now Cantor backends for Python2 and Scilab were merged in master branch. I will do more polishing until the stable release in KDE 4.12. You can follow the new status of development compiling and testing Cantor from master branch.
In a related topic, KDE Edu sprint in A Coruña, Spain, began and runs through the October 30th. Unfortunately I can not participate this time but I expect go to the next meeting (maybe, in Akademy 2014). =)
Have a good work, edu-gearheads!