THIS 11TH-GRADE RHETORIC UNIT PRESENTS THE PROBLEMS INVOLVED IN CHOOSING THE MOST EFFECTIVE AND PERSUASIVE WAY OF ARTICULATING AN IDEA. LESSON 1 OF THE UNIT, "SOUND REASONS," EXPLAINS DEDUCTIVE AND INDUCTIVE LOGICAL PROOFS. LESSON 2, "WHAT'S THE EVIDENCE," ATTEMPTS TO HELP THE STUDENT UNDERSTAND THE USES OF EVIDENCE AND THE PROBLEMS OF USING IT AND SETS UP EVALUATIVE TECHNIQUES FOR DIFFERENT KINDS OF EVIDENCE. LESSON 3, "THE POWER TO MOVE," CONSIDERS THE PROPER USE OF THE PSYCHOLOGICAL OR EMOTIONAL APPEAL TO ACCOMPLISH DESIRABLE ENDS, AND LESSON 4, "WHO SAYS SO," ELABORATES THE CONDITIONS UNDER WHICH PERSONAL PROOF IS AN EFFECTIVE PERSUASIVE INSTRUMENT. THE STUDENT VERSION CONTAINS INTRODUCTORY EXPLANATIONS OF MATERIALS, COMMENTARIES AND EXERCISES ON TEXTS AND PROBLEM SITUATIONS, DISCUSSION QUESTIONS, AND SPEAKING AND WRITING ASSIGNMENTS. THE TEACHER VERSION CONTAINS INSTRUCTIONAL AIDS AND SUGGESTIONS FOR ASSIGNMENTS AND PRESENTATION OF MATERIALS. A TEST DESIGNED TO ACCOMPANY THE UNIT IS APPENDED. SEE ALSO ED 010 129 THROUGH ED 010 160, ED 010 803 THROUGH ED 010 832, TE 000 195 THROUGH TE 000 220, AND TE 000 227 THROUGH TE 000 249. (DL)