This student guide is part of a protocol learning module designed to teach the concept and use of clarity in classroom verbal interactions. The entire module consists of this guide, a protocol film, and testing materials. The student guide contains (a) instruction in the use of protocol modules; (b) a discussion of clarity and the techniques used to obtain clarity in classroom interactions; (c) lessons in the recognition and application of the concept of clarity in classroom situations; and (d) suggestions for incorporating teaching techniques related to clarity in the student's teaching repertoire. The principle underlying clarity is that teacher use of clear and precise language tends to make the material more understandable and increases student achievement. Three teaching techniques related to clarity are described: (a) defining new words - the teacher introduces new terms by defining them or eliciting student definitions and seeking feedback to determine if students have a clear understanding of the new term; (b) precise language - the teacher utilizes precise and definite language in directions, descriptions, and illustrations; and (c) asking single questions - the teacher calls for an answer to only one question at a time rather than asking two or more questions before seeking a student response. (HMD)