This text offers a comprehensive presentation of the vital aspects of supervision with a focus on practical advice about how to handle real-life, on-the-job situations. In this revision, the author has recognized the ever-changing social and work environment, and has updated the text with current trends and situations and the latest professional concepts of supervisory practice. The text is arranged with an emphasis on inquiry learning, which presents the key concepts in a clear and concise manner. A wide variety of exercises, applications, and margin notes help to further the learning process.