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.
Earth Life
Earth Life Web: Bird Orders of the World
At this site from Earth-Life Web, you can find a list of 23 bird orders and additional facts on each species. Taxonomy and photos are included.