Girls can get AIDS the same way they get pregnant. Tracing the source of an epidemic takes painstaking detective work and reliance on the memories and cooperation of the afflicted. Data on people who are not afflicted is useful in ruling out causes. Review ways that diseases are transmitted. Have all students pair up.
Students share their information to investigate the mysterious disease.
After a few minutes of discussion, you might want to add other students to the disease group or allow students to ask each other additional questions. Discuss the results. Note that many HIV positive people are reluctant to discuss their past sex partners or illegal drug use.