Laurel,
As a former elementary teacher myself I can relate to what you are saying. I use a lot of my elementary strategies with my college students. I try to keep in mind that college students are just taller kids. They like to play games, will work hard to earn recognition or even a piece of candy and like to have fun. We do need to keep our activities professional as you mentioned but can still use activities, color, and team competitions to enhance the learning that goes on in our classes.
Gary
Gary Meers, Ed.D.