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Conceptest: CFCs and ozone
David McConnell, North Carolina State University at Raleigh
Analyze the following student descriptions of the relationship between CFCs and ozone. Which is the best? a. CFCs are manufactured gases that destroy the ozone layer and produce oxygen. b. Chlorine forms from the ...

Conceptest: Ozone umbrella analogy
David McConnell, North Carolina State University at Raleigh
Which statement is the best analogy? A. An umbrella is to rain as the stratosphere is to solar radiation. B. An umbrella is to rain as the stratosphere is to ultraviolet radiation. C. An umbrella is to rain as the ...

Scientific Reasoning Assignment
Mary Walczak, st_olaf
In these "Scientific Reasoning Assignments," students tie course concepts to real-world observations with emphasis on creating diagrams that illustrate the concept. A rubric is available to assess the student work and provide feedback to students regarding their proficiencies in several areas.


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