As you probably already know KTurtle's programming language, TurtleScript, allows to be translated. This takes away a barrier for some, especially younger students, on their effort to understand the basics of programming.
When translating KTurtle to a new language you will find, in addition to the GUI strings, the programming commands, the examples and the error messages are included in the standard .pot files as used for translation in KDE. Everything is translated using the regular translation method found in KDE, yet you are strongly advised to learn a little on how to translate these (as you will also read in the translator comments).
Please look at http://edu.kde.org/kturtle/translator.php for more information about the translation process. Thanks a lot for your work! KTurtle depends heavily on its translations.