I learned that 75% of the population are visual learners during an instructor seminar. I'm in the dental field and teach lecture and lab. What has worked great for my classes is to bring a visual aide from lab and present it during lecture. This aide correlates with the daily objectives. It could be a series of dental x-rays-some correct and some with errors. I break the class into groups and have them chose which x-rays are correct and which are not; each group has a different series. when done each group presents their analysis. This approach is low risk because they are actively pursuing their analysis together and presenting as a group. At the end you will have one big group discussion for sure! :-D This works best if group members are switched each time you use this method. Ines