Provide "acknowledged body of knowledge" related to the concept. Emphasize the most significant aspects of the concept in an organized, organic manner. Present information sequentially so students see continuity. Draw attention to important, discrete details; don't swamp students with myriad facts.

Define "services"

Objective: To define "services" as opposed to "goods"

Activity: Teacher conducts lesson to define a "service" as something someone does for someone else.

Assessment: Teacher verbal checking for understanding.