Slope Stability is one in a series of single-topic problem modules intended for use in undergraduate and earth science courses. The module, also appropriate for use in undergraduate civil engineering and engineering geology courses, is a self-standing introduction to studies of slope stability. It has been designed to supplement standard introductory geology laboratory exercises, providing text, problem, and laboratory materials sufficiently flexible to satisfy the needs of widely varied classrooms and instructional situations. Background information may be supplemented with material in other texts. Problems may be done independently of or in conjunction with the laboratory exercises. Topics (with related text, problems, experiments) focus on forces at work, nature of materials, nature of movement, mass-movement classification, landslide recognition, stability analysis, landslide control/correction. Additional, miscellaneous experiments (man-made slope instabilities, quicksand, piping, rapid reservior drawdown) and examples of types of mass movement are provided. Module equipment/materials and grain-size scales for sediments are included in appendices. Like other modules in the series, this module is inquiry- and problem-oriented, dealing with interdisciplinary, contemporary, and pragmatic aspects of the subject matter. It is designed to be open-ended so that ideas can be incorporated into higher level classwork. (Author/JN)