Concluding Activities Structure a situation in which students communicate with a form of sign language. Have students do research projects on the use of codes. For example, during World War II Navaho soldiers were selected as radio operators in the Pacific because it was believed their coded communication system was one which could not be deciphered by the enemy. Have the students prepare reports and presentations on this and other topics having to do with the use of codes. Language is a symbol used for communication.
Visual language is also a symbol system used for communication.
Studying sign language and codes is a concrete way of introducing students to the many different ways that visual images can communicate.