The set of three units, designed for middle and junior high school gifted students, includes 30 lessons on logic and critical thinking. Each lesson includes information on objectives, materials, and teaching presentation suggestions. Ten deductive reasoning lessons focus on such topics as fact and opinion, tests for validity of deductive arguments, and interpretation. The second unit, logic in advertising, presents 15 lessons, including such topics as facts as evidence, credibility, and literal and figurative words. The final unit, inductive reasoning, includes lessons on cause and effect and generalizations. Student worksheets are included for each unit. (CL)