The content specialist must have the vision to see where he or she wants to take the student intellectually over the entire course of a series and the ability to break that message up into a set of discrete but interrelated envelopes. There is no recovery from a bad lecture on television. You can't come back next week and revisit the scene of the crime, hoping to put it right the second time. Abstract models and language which looks so impressive on the blackboard die on the television screen. The material must be concrete.
Sentences have to be kept short.
The presentation must have visual impact. To this end, each program must be fast moving and stimulating. On camera, the content specialist must appear confident and absolutely committed to the ideas being presented. Overall, while educational values cannot be compromised, when scripting or presenting a program education becomes an academic issue if the students won't watch the series. While being able to clarify the themes and ideas, write scripts and communicate them in front of camera are prerequisites for good television, these talents may not be enough.