Chandra,
For me, in my personal classes, there is no extra credit given, ever. I believe each teacher and institution has to decide what works best for them.
My experience has been that students use EC as a way to bring up their grade or avoid failing a class. They ask to do EC assignments that are "busy", but often have little value towards their learning. I think if an assignment I might give is important (worthy of granting credit), it should be included in the required assignments to begin with. Problems I've had with EC include subjectivity in grading,… >>>