Begin by having students read the information on The Sexual Drive. Tell them that before that drive kicks in and clouds their vision, they should give some thought to how they would like to be treated by a romantic partner. Ask them to do this by completing Activity 3-1: Help! I'm Falling in Love.
Before reading the selections on sexual stimulation and sexual response, remind the students that some, but not all, portions of sexual behavior are biological.
After reading the selection, discuss the fact that sexual desire and sexual behavior are more complex than just biology. Let them know that the section deals with normal sexual behaviors.
Note that homosexuality is mentioned briefly in a factual manner.
Causation Students think of 3 events, either in their life or historically, that demonstrate causation. Then think of 3 events that demonstrate correlation but not causation.