Describes TERRI, a computer-assisted simulation lesson in English imperatives for students of English as a foreign language. The program sets a goal (in terms of object locations) for the student who then orders TERRI to relocate individual objects. The program checks the student's grammar and vocabulary, commenting on errors. (SED)

Describes a project begun as an attempt to see if it was possible to exchange meaningful messages in natural English with a machine and whether this could aid acquisition. The result is a group of dialog-stimulator programs which generate guestions, find answers to questions, obey commands, and assimilate new knowledge. (SED)