I labeled this threa this because I realy do not know what else to call it. When in the lecture part of my class I do this often. I will ask the class about what I am getting ready to discuss. What does this do gets them in the mind thought of ok we are conna cover this and I may want to try and remember the key things he just asked. After the lecture we then go back and I will say "Hey remember the question I asked early about such and such who can know tell me the correct answer. You would be surprised at how this works. Then after i get a correct answer i ask a simple one word question. WHY.