Edgar Dale was an American educator who made significant contributions to audiovisual instruction. He wrote a paper in 1933 on how to effectively create a high school film appreciation class. Throughout his career, Dale held teaching positions in North Dakota and Illinois. He developed the Cone of Experience in 1946 to describe various learning experiences and how much information people typically retain from different types of experiences. Dale received several awards over his career for his contributions to education and audiovisual instruction.