The Natural Inquirer - TheNatural Inquirer program produces a variety of science education materials for PreK through grade 12. Natural Inquirer products are produced by the USDA Forest Service, the Cradle of Forestry in America Interpretive Association (CFAIA), and other cooperators and partners.
Clues - line drawings and brief descriptions of identifying
features of trees, including tree shape, branching pattern, bark
and leaf arrangement and shape. Provided by the Illinois Department
of Natural Resources, which also offers Illinois
Trees, which is a well-organized page with photos of leaves
and nuts of several hardwood trees.
The Great Plant
Escape - Detective Le Plant and his friends, Bud and Sprout
are solving mysteries. Through interactive exercises, games, and
quizzes a great deal of information about plants and soil is presented.
Identification - publication includes glossary with many illustrations
of plant parts and plant types. University of Florida Extension,
Institute for Food and Agricultural Sciences (IFAS). Requires
in the Life of a Pine Tree - by Harold C. Fritts, Professor
Emeritus of Dendrochonology, University of Arizona. This is in
pdf format, richly illustrated with photos, graphs, and charts.
World of Trees - a complex site with a great deal of information,
experiments, games, and graphics.
Call of the Wild - Wildlife Biology Member's Manual, Book
1, University of Minnesota. Coverage of habitat, birds, and mammals
is broad enough to be useful beyond the Great Lakes region. Creative
Homes - activities and background for teaching habitat concepts
for 1-6 grades, emphasis on grasslands.