Programming with Greenfoot — Études
Études are small exercises to practice single programming techniques. Each étude is designed to complement the material in the Greenfoot textbook.
They are different in spirit from the exercises included in the book itself: While the book exercises generally aim to build a meaningful project, these are additional exercises "on the side", which do not directly build a project, but provide additional practice with the programming constructs and techniques covered in that chapter.
The études are still under development. So far, the following is available: