Strategically introducing students to a controversial science case--before they read it, watch it, or listen to it--motivates them to learn from it and paves the way for successful discussion and debate. A strategic introduction also provides an opportunity for the instructor to demonstrate scientific reasoning and share guidelines for the discussion and debate. In this article, the authors describe and illustrate how instructors should introduce students to a controversial case and prepare them for debating issues related to it. (Contains 4 tables, 1 figure and 6 resources.)