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An antipodal mystery The discovery of the platypus had the scientific world in an uproar with its mammal-like and bird-like features. How was one to classify the platypus? This case study uses this issue to model the scientific process, with scientists arguing, debating, collecting more evidence, and revising their opinions as new data become available.

Audience:  13-16 Source:  Herreid, Clyde Freeman Resource type:  Classroom activity

Why Sex is Good This case study is based on a 2005 journal article that deals with the issue of sexual vs. asexual reproduction and their relative merits—a question that has bedeviled biologists for more than a century. The article serves as the final stage of this case focusing on why sex is useful (at least in some circumstances).

Audience:  13-16 Source:  Herreid, Clyde Freeman Resource type:  Classroom activity

An antipodal mystery The discovery of the platypus had the scientific world in an uproar with its mammal-like and bird-like features. How was one to classify the platypus? This case study uses this issue to model the scientific process, with scientists arguing, debating, collecting more evidence, and revising their opinions as new data become available.

Audience:  9-12 Source:  Herreid, Clyde Freeman Resource type:  Classroom activity