The activity outlined here is designed to clarify the "learning-what-language-is" element of the relationship between Helen Keller and Annie Sullivan. It begins with selecting half of the class willing to be blindfolded and, out of the hearing of those volunteers, explaining to the other half the nature and purpose of the activity. (A verbal prompt is included in the plan. Then it consists of blindfolding the volunteer half of the class, of pairing each with a member of the other half at their seats, and then of having the "sighted" team member (the Annie) teach the blindfolded member (the Helen) some simple concepts through an invented sign language without any audible or visible clue as to what the Annie/teacher intends. The process involves providing four common, easily obtained objects (five, including blindfolds) for each pair. The objects are the same for each pair. Then the "Annies" will use the objects to teach the "Helens" signs representing two abstract concepts about the objects. For the quickest students the teaching will take about 10-15 minutes. For slower stdents, 20 or so minutes. When the "Annie" of each group feels that the "Helen" has learnied the lesson, you will test the "Helen" with two entirely different objects that have the same abstract qualities. The whole activity, including a brief follow-up, takes about 50 minutes.