US Geological Survey
Usgs Kids: Mealworm Ranch
A fun, hands-on project that will allow your students see first-hand how metamorphosis works. Students observe mealworms develop and change right before their eyes.
Regents of the University of Michigan
Animal Diversity Web: Mammary Glands
A very solid history on the evolution of, and function of, the glands that give the group mammals their name. Good comparisons of other mammals and their function.
Other
Voyage to the Deep: Tubeworm
This is a very brief overview of tubeworms, a hydrothermal vent marine animal.
PBS
Pbs Nature: Penguins
Did you know that penguins can survive for more than 100 days without food or water? Discover more educational facts about these fascinating birds when you explore this site.
PBS
Pbs: Nature: The World of Penguins
What do you know about the world of penguins? This PBS site features information about these flightless birds. Come and check out this extraordinary resource.