[msft] Not sure. It's a hosted Jupyter Notebook service. A Notebook here is a polyglot, browser based, REPL on steroids.
See:
Sample notebooks (html captures of runnable notebooks):
See:
Sample notebooks (html captures of runnable notebooks):
Smalltalk is somewhat of a primitive browser and very much a REPL on steroids. Instead of being polyglot from the standpoint of supporting multiple languages, Smalltalk was designed to be usable by people from grade school students up through researchers. (It largely succeeded in that goal, but failed in that it didn't attain enough popularity with mainstream engineers/programmers.)
Some of the educational uses of Squeak Smalltalk are very much in the same vein.