Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.

Discover what evolution is through a case study of a Hawaiian snail species' survival. [7:20]

This is a great lesson plan that combines Karoytypes and evolution. Students will recognize that the chromosomes of chimpanzees and humans are remarkably similar, then correlate that to their evolutionary relationship.

Overview of the basic concepts behind evolution, such as gene variation and adaptations.[Free Registration/Login may be required to access all resource tools.]

How natural selection works at the level of genes, alleles, genotypes, & phenotypes.

Students will be able to identify important ideas Darwin developed during the voyage of the Beagle, and give examples of his observations that supported those ideas.

This interactive site provides animations and activities in several areas of physiology. The images are simple, but clear. The accompanying text provides a good description of the process being shown.

The anatomy of an earthworm is described and how it reproduces.

This article allows students to recognize that the process of evolution by natural selection continues to change our world and ourselves, both despite and because of our best efforts to control it.