Gerlach & Ely educational design model Vernon Samuel Gerlach 1922 – present An American educator and writer Gerlach authored several books on education, including: Teaching and Media: A Systematic Approach,1971; Instructional Theory, 1974; An Interactive Approach to BASIC, 1984 Received his Ed.D from Arizona State University in 1963, where he also taught as an assistant and associate professor.