Studying vertebrates and invertebrates makes for fun lessons for students - like this one, where kids get to make "animals" out of playdough and then stack wooden blocks on top! Read more about how to implement this lesson in this post.
This is an example of how you could use a graphic organizer when discussing Vertebrates and Invertebrates. This specific graphic organizer is a Venn Diagram. Graphic organizers are an aspect of effective instruction for engaging students.
Animal Classification: Vertebrates and Invertebrates
A full unit with lesson plans and activities to teach vertebrate and invertebrate along with the various classes of vertebrate including this fun creative activity of creating your own vertebrate animal with characteristics of classes.