Technology that helps students view images in three dimensions (3-D) can support a broad range of learning styles. "GeoWall systems" are visualization tools that allow scientists, teachers, and students to project stereographic images and view them in 3-D. We developed and presented 3-D visualization exercises in several undergraduate courses. Students in introductory-level classes benefited from the novel presentation of material. Advanced undergraduates and graduate students appreciated the opportunity to analyze the advantages, limitations, and potential applications of the new technology. 3-D visualization technology, which is more affordable and convenient than ever before, may offer an untapped potential in geography instruction at many levels. . She studies patterns and causes of vegetation change ouer the past few centuries. She strives to enhance her teaching at all levels, including in the department's introductory biogeography course, which enrolls more than 450 students per semester.