I took a photo of their group, showed them how I would photograph them and talk with them as if we were on a real shoot. Then I handed the camera over (yikes!) and let them take over. The only thing I helped them with was posing ideas if they needed some (which they did mostly on their own) and fixing the exposure when the photo was "too dark" or "too bright".
Here are their best shots! I am so proud of them!