hi, I teach advanced classes and for the past semester and three weeks I have been doing lessons that are very similar to the ones most of us use here.

But I want to do something more mature but not boring, sort of like a discussion. Does anybody have any ideas for a full lesson?

thanks.

This site has some interesting moral dilemmas you can pose for students. Some of them may require editing!
http://www.friesian.com/valley/dilemmas.htm