The feedback slides will tell the user if their responses are correct or incorrect.  This information could be relayed to the user visually, through verbal signals, or a combination of both.  It is strongly recommended if a verbal feedback response is given, users wear headphones.  This prevents the user from disturbing others and also prevents possible embassarrment from incorrect reponses.  There should be one correct and incorrect slide per question.  The feedback slides are hyperlinked.  If the user is correct, the feedback slide will prompt the user to the next slide.  If the user is incorrect, the feedback slide can be hyperlinked to send the user back to the question to try again.