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Trion Dubose-Arnold, chemistry teacher
at Southside High School in Atlanta Public Schools, created two
complete investigative cases for her chemistry classes. Girls
Gone Wild involves a group of cheerleaders who are disqualified
from a competition because an unknown white powder is discovered
in their hotel room. Students must help investigators to discover
the composition of the unknown white powder through a laboratory
activity and deductive reasoning. Two different options for assessment,
a technical report from the laboratory to the police or a comic
strip depicting the story's events and laboratory procedures, allow
students to choose their own assignment.
For another case, Ms. Dubose-Arnold created a mock
newspaper article describing a diving accident in which a young
diver ascended too quickly and suffered from decompression syndrome
or "the bends". Students are compelled to create a diving
safety brochure outlining the signs, symptoms, etiology, and physiologic
basis for decompression syndrome. The brochure must also include
discussion of how the gas laws apply to scuba diving.
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