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

Modeling Atmospheric CO2 Data
John B. VanLeer, Cascadia Community College
In this activity, students will use actual CO2 data from the Mauna Loa Observatory in Hawaii to create their own "Keeling Curve"; conduct an analysis of the data; and, attempt to match it to a mathematical function. They will then use the function to predict increases in CO2, both historical and future.

Bioregion Discipline: Environmental Studies, Mathematics
Bioregion Scale: Global
Bioregion Topical Vocabulary: Climate Change

Sustainability and Changing Rates of Change
Christopher Coughenour, The Evergreen State College
To understand sustainability, students must understand rates of change. This activity includes a primer on basic rates concepts and an exercise that motivates critical thinking about rates of change and sustainability with an analysis of historical petroleum production rates data from the United States and the world.

Bioregion Discipline: Geoscience, Environmental Studies, Mathematics
Bioregion Scale: Global
Bioregion Topical Vocabulary: Energy

Evergreen State College