Scholastic
Scholastic: Study Jams! Science: Animals: Invertebrates
A slideshow and a short multiple-choice quiz on invertebrates that presents examples of each of the six phyla in the invertebrate group.
CK-12 Foundation
Ck 12: Biology: Invertebrate Classification
[Free Registration/Login may be required to access all resource tools.] Covers how invertebrates are classified.
CK-12 Foundation
Ck 12: Life Science: Invertebrates
[Free Registration/Login may be required to access all resource tools.] Animals are also often identified as being either invertebrates or vertebrates. These are terms based on the skeletons of the animals. Vertebrates have a backbone...