EPA's Wetlands Division Wetlands Education Materials are grouped by grade and include links to a wealth of curriculum from associates such as Ducks Unlimited and Discover Wetlands.
North Carolina Environmental Quality Educator Resources maintains a comprehensive database of the environmental education centers, initiative, and resources in the state.
NOAA's Estuary Education Program website provides lesson plans, tutorials, activities, and real time data for middle and high school students and teachers.
Ducks Unlimited's North Carolina page provides information about DU's conservation projects in the state and information about where ducks that migrate through North Carolina come from.
California Coastal Commission's Waves, Wetlands and Watersheds offer lesson plans and activities for grades 3-8, as well as Community Action Activities. Some activities are California specific, but most are applicable to all communities.