Through the Buckeye Council for History Education we are going to be taking our K-12 teacher professional development seminars and modifying them for a webinar format.  One of the most successful aspects of our PD are our primary source activities.   The PSAs are engaging and interactive, requiring the teachers to do primary source interpretation in small groups and then share with the larger group.  I know there has to be a great way to translate these to the virtual world, I just can’t seem to figure it out.  I’d be interested to hear if any other people have experience with webinar participants doing something like this, or other types of collaborative work through webinars.  Also, any software recommendations would be helpful.  Right now we are playing around with DimDim.