Are your exhibit guides just standing there waiting for questions? You might try having them do exhibit-related demonstrations periodically, as a way to get them interacting with the public. Many people feel very uncomfortable approaching a visitor to ask if they have any questions. If you can give them some sort of ice breaker, you will probably get much better results. The demos don't have to be complex. In fact, simple is better. For example, if you have the classic "Hand Battery" exhibit, give the guide a cart with some dissected batteries, to show how they compare with what is happening in the exhibit. The same technique can apply to history and art as well as science. If you want to "bat some ideas around," let me know. Robert Krampf Science Education Company http://members.aol.com/krampf/home.html