Students often come to class discussions with preformed opinions on many ethical issues. The challenging task for teachers is to help students learn to identify the facts of a case, recognize the underlying ethical dilemmas, and to understand the different perspectives involved. These objectives can be met successfully by following the three key components to effective discussions related to ethics and science that are discussed in this article: Content and lesson strategies, a decision-making model, and a familiarity with ethical perspectives (see Figure 1).