Environmental Education for Kids
Eek!: Dichotomous Tree Key
Identify a tree using this interactive identification tool.
Oregon State University
Oregon State University: Dichotomous Key
An excellent starting point. Get a good description of what the dichotomous key for tree identification is and then directions for using it to identify trees.
Environmental Education for Kids
Eek!: Evergreens
Site chronicles Wisconsin's Evergreen and Conifer trees. There are descriptions of the various tree types. Additionally, site details the uses of these trees in nature. Ideal for grades 4-8.