Mechanisms of Evolution
DNA molecule, side view and end view
Additional resources:
Understanding Evolution, a very readable introduction to evolution with interesting examples and principles explained. Useful material for teachers. From the University of California Museum of Paleontology.
AAAS - Evolution on the Front Lines. Resources for teachers and journalists, from the largest association of American scientists.
Evolution Resources From the National Academies. The National Academies are America's official, highly respected, bodies of eminent scientists, engineers, and doctors.
SETI "Voyages Thru Time".
A standards based curriculum, covering 1 year of high school science with evolution as the central theme.