Learners use an interactive online mass balance model to observe levels of chlorofluorocarbons over the past few years. Students evaluate the influence protocol emissions will have on the future levels of CFCs.

Ninth graders test water in a local creek using chemical kits and probes. They take GPS readings and digital photos. They calculate the Water Quality Index and create a spreadsheet of the test data.

Ninth graders test water in a local creek using chemical kits and probes. They take GPS readings and digital photographs. They calculate the Water Quality Index and create a spreadsheet.