Redwood Ed-Ventures is a valuable tool with links to a variety of organizations that provide quality information, lessons and student activities on redwoods. Also a video series on state park careers featuring interviews of various park staff. http://www.redwood-edventures.org/
CCC AmeriCorps Watershed Stewards Program
Consider combining a salmon PORTS program with a visit from the California Conservation Corps' Watershed Stewards program. Watershed Stewards offers a free classroom-based program on salmon and coastal watersheds to schools in coastal counties from Santa Barbara to Del Norte.
The Salmon Source: An Educator's Guide. California Department of Fish and Game, 2007.
Salmon Coloring Book. U.S. Fish & Wildlife Service. http://www.fws.gov/pacific/publications/salmnbk.pdf
American River Salmon Educator Activity Guide. California Department of Fish and Game.
This guide contains curriculum aids for teaching about salmon and the American River watershed. It targets K-8th grade, and is correlated to the California Educational Content Standards.