Students categorize animals. In this animal classification lesson, students group animals by their characteristics. Students break into groups and work together to classify the animals. Students fill out a graphic organizer with their...

Provides real world examples of symmetry in architecture, including pictures of each kind of symmetry, examples, acknowledgements, and a bibliography.

[Free Registration/Login may be required to access all resource tools.] Identify line, bilateral, and rotational symmetry.

[Free Registration/Login may be required to access all resource tools.] The word "worm" is not very scientific. But it is a word that informally describes animals (usually invertebrates) that have long bodies with no arms or legs. Worms...

This online biology book chapter offers definitions and descriptions of the nervous system's components.

Describes the characteristics and anatomy of organisms in the phylum Platyhelminthes.