I have found that it is important to ask questions and wait for an answer, and then build on it. Using the student's response, I will ask the class in general, is this right? Sometimes I will make outrageous statements and ask the students, 'Is this right?' This engages them and with some humor tends to guide the discussion into why my provocative statement was wrong and what is the right answer. By my willingness to go out on a limb it encourages even the shyness or most uncertain students to participate in the discussion by relaxing the 'serious' mode… >>>