It is a simple method of verifying how many students really participated in a question and answer session and who did most of the talking. A simple legend helps determine the patterns. Interaction charts can be used to determine who answers and who doesn't as well as to tally praise from the teacher. Interaction charts are simple to construct. A box is used to represent each student.
Recording is done by drawing arrows to indicate the directions of the form of communication.
These symbols would be recorded for each interaction between the teacher and student. Any legend system that is easy to understand can be used. The following forms can be used for identifying interaction patterns.