NanoDays is next month, and the NISE Net has a number of training materials that might be useful for those new to presenting nano content to public audiences:
NISE Network Blog
Nanoscale science gets a new periodic table, Nanopants skew public perception - news from the 2009 NSF NSE Meeting
NanoDays 2008 at the Museum of Science, Boston At last year's NanoDays, staff at the Chabot Space & Science Center created NanoDays passports for visitors. Lisa Hoover, the Galaxy Explorers Program Manager at Chabot, explained that they create passports for most of their special events to give visitors a goal, guide visitors through thematic stations, and provide follow-up content or home activities.