When learning over"television is measured against "conventional or classroom teaching" experiments are "difficult to design. The question becomes "What is really being measured?" Is it television against classroom? Teacher against teacher? Or, some interaction of variables? Secondlyit is often difficult to match pupils equally and.control all^design variables
This report is published in Kniker, Eleanor L., and Mark A. Edelman. Review of Literature on Remote Teachingg Technologies and Teaching Effectiveness. Iowa State University, 1991.
Kniker, Eleanor L. and Edelman, Mark A., "Review of Literature on Remote Teaching Technologies and Teaching Effectiveness" (1991). Economic Staff Paper Series. 232.