This protocol materials unit, based on the interaction component of instruction, is designed to help prospective teachers better understand verbal behaviors as related to fair (positive feedback) and unfair (negative feedback) responses. Fair verbal behavior is defined as following a standard of equal treatment toward all students and as free from bias, dishonesty, and injustice. Findings from previous studies indicate that communications in classroom verbal interaction carry cognitive, affective, and social meaning. Further, teachers who give fair verbal responses usually have classes who achieve in most subject areas. In two films of teacher-led class discussion, the teacher exhibits unfair verbal behaviors in the first and fair verbal behaviors in the second. Students are asked to observe and identify consistency of teacher feedback and differences between the behavior patterns of the two teachers. A class discussion follows, after which pre-service teachers analyze the tapescript of the film for specific indicators of fair verbal behavior. Lastly, the students work on the criterion test for the unit in a role playing activity with a fair and unfair teacher, using dialogue developed by pre-service teachers. Student materials are included in the booklet. (Author/SJM)