[hdctambien]

I use Java and jcreator in my classroom. Both free. There are also free tools that help students get a grasp of concepts before mastering the syntax (bluej, scratch, alice)

There are also packages that help with teaching, karel J robot comes to mind.

I also use codehs.com as a supplement for my class.

[hackuser]

Great, thanks. Any thoughts on what works and what doesn't, more generally?

Also, what do you teach and to students of what levels of aptitude and skill?