Adela,
 
Speaking as someone who has prepared entire exhibits for county fairs, I  
know the biggest mistake people make is to write entire paragraphs as text. No  
one reads more than three lines of text, especially if it takes more than ten  
seconds to scan. The most effective exhibits have stories told with 
photographs  or line drawings and brief simple captions. Believe me when I say people 
will  have to get your entire message in a single glance with a poster board. 
Once you  caught them, then table materials can be stacked alongside for take 
home  reading.
 
Ron May
Legacy 106, Inc.