[Edu-sig] CS teaching approaches

[roberto]

hello,
i will start introductory CS courses for middle school students (age 10 -13);
i will mainly make use of logo-like languages and approaches, Turtle
Art among a couple of others;
i'd like to ask if you know which the most widespread approaches to CS
teaching are today for young students, or if someone has collected on
the web a simple classification among different approaches, showing
similarities and differences;
i'd like to let students taste something new and then report back to
you the result of the courses

thank you very much in advance
-- 
roberto