The exhibit hall contains up to 30 exhibits covering a wide range of water-related themes.  The displays include topics such as aquatic insects and animals, hydroponics, rainforest ecology, the cost of water, water treatment and disposal, stream action on landscapes, and surface tension (giant bubbles).  Manned exhibits which engage the students’ attention and provide an educational experience about aspects of water or water use are preferred.  Any presentations made as a part of an exhibit should be kept to a approximately five minutes in length to allow the students time to visit the other displays.