See panel 2 below. Instructor reinforces the response by either acknowledging or failing to acknowledge the student's response. Determine the type of reinforcement . See panel 3 below. I recommend verbal reinforcement.
Instructor makes use of the student's response .
Determine how instructor uses the student's response for remainder of class. However you should provide constructive criticism of students' responses. See panel 4 below. I recommend repeating the answer and acknowleding the answer's authorship. Instructor asks question.