In "Scorched," Charlie explains that when fires are investigated, the investigators study several elements that come together and form a signature for the fire. But unlike a handwritten signature, the elements of a fire's signature are more general and less individually specific. Elements like scorch marks and gasoline remnants are two different characteristics of an arson-caused fire the fire either exhibits the characteristic or it does not.
Before the Activity
Download the attached PDF and look over the Teacher page.
During the Activity
Discuss the materials from the Student Page with your class.
After the Activity
Encourage students to explore web sites and questions from the Extensions page.