Squeak on Ubuntu

A student of mine is interested in Smalltalk; I've decided to oblige him by including it in the lesson. First step was to install Squeak, the popular Smalltalk programming environment. The whole process was easy:

sudo apt-get install squeak squeak-vm squeak-sources3.9 squeak-image3.9

After that, Squeak is available from the Programming submenu. Shown above is the end Squeak workspace.

What to do after this I'm not quite sure. Looks fun, though.