I'm teaching Sunday School now to the ladies class and they are used to a lecture type of teaching but I want to engage them in discussion. I'm having a hard time with this. They don't seem to want to have interaction and I don't know if they just don't want to draw attention to themselves or maybe they just don't know their bible well enough to discuss the scripture. They're all very sweet and I love them. They are also mostly seniors. Any ideas on how I can encourage interaction and discussion?