Edgar Dale
American educator
Edgar Dale was an American educator who developed the Cone of Experience, also known as the Learning Pyramid. He made several contributions to audio and visual instruction, including a methodology for analyzing the content of motion pictures. Wikipedia
Born: April 27, 1900, Benson, MN
Died: March 8, 1985 (age 84 years), Columbus, OH
Education: The University of Chicago and University of North Dakota
Notable work: Learning Pyramid