Hi- I worked on a math exhibit at the Maryland Science Center a few years ago-- I believe this is the exhibit some of the others are referring to. It was written up in the Exhibitionist in 1995, when we finished producing the show. We made two versions of the exhibit--one was permanent for the MSC and the other traveled. There are lots of interactive components to the show--the soap film dippers as mentioned, mapping problems, Fibonacci numbers, etc. You can contact me off-list if you like, or you can contact the exhibits department at the MD Science Center. (I no longer work there.) Hope this will be of some help! -Jer Gallay ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).