An audio-tutorial approach that has been implemented at Indiana University in Bloomington focuses on student learning rather than the mechanism of teaching. The basic component of an audio-tutorial course is a taped presentation that acts as a tutor, guiding the students through a sequence of readings, filmstrips, diagrams, tables, and other media. The tape is not simply a recorded lecture; the students are frequently directed by the tape to stop and analyze materials, plot data, examine a filmstrip, apply principles, and discuss conclusions. An instructor is always present when the tapes are being used. Use of the audio-tutorial laboratory in zoology, microbiology, and geography classes is discussed. The most important advantage of the approach is that it allows procedures for specific techniques to be given to students on an essentially individualized basis when the student is ready for them. In the microbiology course, the audio-tutorial approach also became an integral part of the evaluation process. (SW)