people sit on opposite sides of this exhibit, with identical trays
of shells. One person picks a shell and marks it with a gray ring.
The other person tries to figure out the partners shell by
asking YES or NO questions, such as Is the shell perfectly
smooth? Each answer allows the questioner to eliminate some
of the shells in the tray, which can be marked with white rings.
After a series of questions further define the shell the partner
makes a guess. SHELL GAME illustrates that in order to study living
things biologists must first sort and name them and then characterize
them with features such as color, shape, size, etc., to tell one
organism from another.