Describes an exercise that enlists students and teachers as local experts to predict the effect warmer temperatures will have on agro- and natural ecosystems with which they are familiar. Students will gain an understanding of the "greenhouse effect" and identify factors that determine which organisms occur naturally together. (PR)

Describes exercises to examine the global carbon cycle. Students are asked to predict consequences of increased carbon dioxide emissions into the atmosphere and to suggest ways to mitigate problems associated with these higher levels of atmospheric carbon dioxide. A comparison modeling exercise examines some of the variables related to the success…

Describes a simulation exercise designed to illustrate the influence of founder effects, genetic drift, and gene flow. Also presents strategies for using cooperative learning in large lecture settings. (WRM)