The following books and websites contain additional information, activities, and enrichment options. The books may be available through publishers, distributors such as bookstores or online retailers, or library systems.

For Students

Cells and Systems
Holly Wallace, Heinemann, 2003
The Diversity of Life: From Single Cells to Multicellular Organisms
Robert Snedden, Heinemann, 2002
The World of the Cell: Life on a Small Scale
Robert Snedden, Heinemann, 2002
Holly Wallace, Heinemann, 2000
Plant Classification
Louise and Richard Spilsbury, Heinemann, 2003
Classifying Mammals
Andrew Solway, Heinemann, 2003

For Teachers

Identifying and Harvesting Edible and Medicinal Plants in Wild (and Not So Wild) Places
Steve Brill, Harper Paperbacks, 1994
National Audubon Society Field Guide to North American Mammals
John O. Whitaker, Jr., Knopf, 1996


The Electronic Naturalist
North American Mammals

For additional websites, see the Best of the Net feature at and sites recommended by the National Science Teachers Association at