Langdell is based on the assumption that the best way of teaching law was showing cases instead of reading textbooks. After some initial resistance, this method is assumed by other six law schools in 1895. Later, in 1921, Harvard Bussiness School adopted the method and called as it is currently known case method. The same Garvin (2003) asserts that only since 1985 and with much delay Harvard Medical School uses the case method. The case method and the case the case method is a technique (and methodology) educational, puts for consideration of student situations and real problems that lead to the presentation of alternative solutions or finally solve them, it could say that this method is a type of interactive discussion and is structured on the basis of the case study that is referred to commonly with a case. The case term etymologically comes from the latin casus, in the dictionary of the Real Academia Espanola (2001) listed several meanings of the word case, but we will only take some that are closer to our point of view: event, event, chance, perhaps, lance, occasion or juncture and matter that is or intends to consult any and ask his opinionWe believe that this last meaning is approaching more concept that we seek. A case is the description of a real situation; adopted to study and promote the exchange of ideas. The description of the case despite being detailed, relevant and comprehensive does not mean to present all events which presents a particular problem; Although it must present clearly to allow analysis. Herreid (1997) asserts that cases in many academic disciplines are preferred because they serve to illustrate the General principles and good practices, correct answers and facts that have a high priority for present or future professional practice.