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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.

Bioregion Discipline: Mathematics, Environmental Studies, Biology, Chemistry
Bioregion Topical Vocabulary: Ecosystem Health, Climate Change, Sustainability Concepts & Practices

Sally Salivates Seashells by the Seashore- Ocean Acidification and the Effect on Sea Shells
Rus Higley, Highline Community College, and Vanessa Hunt, Central Washington University
In this lesson we review "Acids and Bases" taught in a previous lesson and, through a scientific method, will look at the impact of an acid on different types of shells. Students will reinforce previous learning of scientific principles including acids/basis and will develop a real experiment using the scientific method.

Bioregion Discipline: Mathematics, Environmental Studies, Oceanography/Marine Studies
Bioregion Scale: Global
Bioregion Topical Vocabulary: Ecosystem Health, Cycles & Systems, Climate Change, Water & Watersheds

Estimating Greenhouse Gas Offsets as Part of Shoreline Community College's Greenhouse Gas Inventory
Charles Dodd, Shoreline Community College
This is a service-learning project for students in Geography 204 (Weather, Climate and Ecosystems). Students will assess prior estimates of carbon offsets associated with plant and soil biomass on their college campus; and as a result, they will understand the complexity of measuring the complex sources of carbon emissions and offsets; address the challenges of coordinating data collection and field measurement; and realize importance of estimation in public policy contexts.

Bioregion Discipline: Mathematics, Geography
Bioregion Scale: Campus
Bioregion Topical Vocabulary: Ecosystem Health, Promising Pedagogies:Civic Engagement & Service Learning, Climate Change