This document discusses the concept of culture as being similar to an iceberg, with most aspects of a culture existing below the surface and not immediately visible. It notes that only about 1/8 of an iceberg and culture are visible above the surface, while the majority remains below. The document guides students through an activity where they identify visible and invisible aspects of culture and determine how the invisible aspects often influence the visible ones. It emphasizes that culture is one of many influences on behavior.