University of California
Understanding Evolution: Introducing the Arthropods
This extensive look at the arthropod provides enough information for any budding naturalist, but will also be interesting to one casually interested in insects, spiders, and crustaceans. The pictures are outstanding, and the writing is...
McGraw Hill
Glencoe Biology: Animal Body Plans: Self Check Quiz
Try these five multiple-choice questions about animal body plans. After submitting answers, students can review the material.
CK-12 Foundation
Ck 12: Life Science: Echinoderms
[Free Registration/Login may be required to access all resource tools.] You're probably familiar with starfish and sand dollars. They are both echinoderms. Sea urchins and sea cucumbers are also echinoderms. What's similar between these...
TED Talks
Ted: Ted Ed: The Science of Symmetry
Colm Kelleher unpacks symmetry and explains how animals' distinct symmetries can tell us more about them- and ourselves. [5:09]
TED Talks
Ted: Ted Ed: Why Are Human Bodies Asymmetrical?
Leo Q. Wan takes us into the human body to show how biological asymmetry can be quite beautiful. [4:18]
TED Talks
Ted: Ted Ed: Why Are Fish Fish Shaped?
Lauren Sallan explains why certain fish features are so common, and what it reveals about fish.
