EPA's Environmental Education Center provides many links to curriculum resources and activities for a variety of environmental education topics.
Hayes Arboretum, Richmond, Indiana a 466-acre park with many trees that are part of Indiana's old growth forest.
Idaho State Arboretum Tree Walk another excellent tree walk on the campus of Idaho State University. While many of the trees are only found in the western part of the United States, it is still an informative and visually appealing site to visit.
Provides information about Indiana forests, urban forestry issues, can send materials to be used in the classroom, and provides a link to Project Learning Tree which is an award-winning environmental education program. Indiana's PLT program has reached thousands of educators across the state with material that helps teach both students and teachers how, not what, to think.
Indiana Department of Natural Resources, Division of Nature Preserves provides information on old growth forests, nature preserves of Indiana, the Indiana Natural Heritage Data Center, and listing of endangered, threatened, and rare vascular plants of Indiana.
Morton Arboretum, near Chicago, Illinois The Morton Arboretum's living collections represent one of the most comprehensive collections of woody plants in North America.
Purdue University Department of Forestry & Natural Resources provides listing of resources for Urban Forestry issues. Also, their Extension site has many on-line educational exercises and resources.
The National Arbor Day Foundation has many educational tools, which are designed to help young people understand the importance of trees, tree planting, and wise environmental stewardship. A wide variety of curriculum kits, booklets, tapes, posters, flyers, newsletters, and other materials prepared by the Foundation are available to teachers and educators. A pocket-sized tree identification booklet is available by clicking on their Teaching Youth About Trees link.
USDA Forest Service, St. Paul Field Office provides an extensive list of online materials for teachers to use with elementary, middle and high school students. An excellent one is Identifying Trees and Developing a Class Herbarium, suitable for all age levels.
What Tree Is That? is an interactive guide that takes you through a series of questions and diagrams to help you identify a particular tree. Sponsored by TreeLink and the National Arbor Day Foundation.