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Classification
Classification lab A lab exercise to help students understand biological classification.
Classification explained Primarily a biochemical explanation of classification. Cladisitics are included.
Taxonomy tree II Move down the taxonomic tree: Kingdom, Phyla, Order, etc. Follow the directions at the site!
Taxonomy tree III Click your way down the taxonomic tree. There is a great deal of information here if you click the buttons at the bottom of the pages.
Tree of Life Follow the branches down the taxonomic tree (but they usually end before 'species' is reached). With pictures.
Taxonomy slide show A "nature walk" approach to classification with some very nice pictures.
Species search Find out about any(?) species. (Read the instructions carefully.)