Oh, dramatic irony. Within Oedipus, it's ubiquitous and, frankly, painful.  Mr. Jones has his "bell of irony" that he rings in class as his students go over the play.  I've got a sound effect of a crowd groaning in disgust.  For this exercise, let's lose the bells and whistles (bad pun, I know) and cut to the chase:

Working in groups (be sure to note the names of all of the members of your group when you post your group's comments), find at least three examples of dramatic irony in the play and post them here. 

In addition, answer this question: why does Teiresias refuse to help Oedipus?