The Giant Seesaw encourages group cooperation to experience levers and leverage. Individuals move back and forth over the fulcrum. The variety of positions, sizes and number of people on the seesaw provide many variables with which to experiment. The lever arm is balanced at the other end by a 200-pound weight. Participants explore the advantages of long lever arms.
Visitors speak softly into one end and are heard clearly at the other end, many yards away.
The energy of sound typically spreads out in all directions, however, Speaking Tubes illustrate how the energy of one's voice can be channeled within a tube. This exhibit is made up of 200 feet of bendable tubes, three inches in diameter. The reflectors in this exhibit face one another approximately 80 feet apart. When a visitor speaks or even whispers into the focal point of one of the dishes, the individual can be heard clearly by a person at the other dish. Participants step on three wooden beams that are mounted like a seesaw on ground level.