Students examine non-native species and the problems they have caused in the waters of the Chesapeake Bay. They create a "Wanted" poster for one of the species. They describe the effects of non-native species on the schoolyard species.

Third graders identify sources of salt water and fresh water that enter the Chesapeake Bay. They build a model watershed and describe how runoff enters the Bay.

  Students discuss what a watershed is, and locate watersheds on a map.  In this watershed lesson, students use the information they have been introduced to and create a color coded watershed map of their own.     

Students investigate water ways by conducting an experiment with classmates.  In this natural resources lesson, students define a watershed and identify where large ones are located within the United States.  Students utilize...