How Many Plants Make a Future? The Carbon Dioxide Challenge
Rus Higley, Highline Community College Marine Science and Technology Center, Vanessa Hunt and Timothy Sorey, Central Washington University
This activity focuses on the role of photosynthesis in a sustainable future. Students explore the effect of photosynthesis and respiration in a 'closed systems' containing plankton, marine plants, and fish. By calculating carbon dioxide uptake and production in these systems, they predict a plant: animal ratio sufficient to maintain a system in carbon dioxide 'balance' for one hour.

Developing a Transportation Survey to Estimate Gasoline Use by Campus Commuters
Steven Bogart, Shoreline Community College
Through this activity, students in a liberal arts mathematics class will develop experience with real-world statistical concepts through the context of sustainability: estimation, survey writing, sampling techniques, and data analysis.