This fastback distills the essential features of critical thinking, as identified by prominent specialists in the field, and presents them in a way that is immediately usable in the classroom. After presenting a definition of critical thinking, the fastback discusses the necessary elements of critical thinking--dispositions, criteria, argument, reasoning, point of view, and procedures for applying criteria and judging. The fastback also presents an example of critical thinking in action and a discussion of using critical thinking. It addresses the trouble with critical thinking and discusses why critical thinking is so important. Contains 19 references and 11 resources for further study. (RS)