Unit Plan
Estrella Mountain Community College

Estrella Mountain Community College: Phylum Annelida

For Students 9th - 10th
This section (in table of contents as "Phylum Annelida: Segmented Worms") gives a description of how segmented worms developed certain characteristics as well as it explains the differences in the evolution of different classes of...
Handout
Regents of the University of Michigan

Animal Diversity Web: Class Polychaeta

For Students 9th - 10th
Resource provides a general description of marine worms, including sand worms, tube worms and clam worms.