The place for lectures - on video or live

Lectures can:

• Provide information that is new, based on original research, and generally not found in textbook and other printed sources
• Highlight similarities and differences between key concepts
• Help communicate the enthusiasm of teachers for their subjects
• Model how a particular discipline deals with questions of evidence, critical analysis, problem solving and the like
• Dramatise importance concepts and share personal insights
• Organise subject matter in a way that is best suited to a particular class or course objectives

Cashin (1985) 

Be clear about why you choose to lecture:

• To establish the broad outlines of a body of material?
• To set guidelines for independent study?
• To model the intellectual attitudes you hope to encourage in students?
• To encourage learners' interest in a topic?
• To set the moral culture for discussions? 

Brookfield (1990)