Elicit non-trivial dialogue from students. Guide students to reflection and analysis of the experience. Encourage students to share their perceptions and beliefs. Summarize and review similarities and differences.

Students generate a large sampling of common symptoms.

Objective: To have the students analyze the signs and symptoms which they are generating and possibly recognize some key features of how a virus works.

Activity: The teacher helps the students to "see" the patterns and common characteristics by listing on the board the contributions which the students make. Together, the class analyzes the list for clues and insights into how a virus might attack and cause sickness.

Assessment: Ability of the group to enter into the discussion and contribute educated insights into the workings of a virus.