In compare-and-contrast, you usually use either block or point-by-point format.

Block Format:

Introduction

Anthem- 3 points on it (say, individualism, theme, setting)

Antz- commentary on the same three points

Conclusion

Point-by-Point

Introduction

Point #1 (i.e., Theme)- what does Anthem do? What does Antz do?

Point #2 (i.e, Individualism)

Point #3 (i.e., Setting)

Conclusion

(Point-by-point has always been easier for me)

The main point of both Antz and Anthem is inviduality, or rather lack of it in society. They both revolve around a male protagonist who accomplishes something, but doesn’t recieve recognition for it because of the emphasis of the gropu and de-emphasis on the individual, as well as a female who shares these values. However, Anthem is much more radical- the characters are forbidden the use of the word “I”, and use plural pronouns even when referring to one person. In Antz, there are individual antagonists, whereas in Anthem, it is Equality 7-2521 against a collective society divided into councils, although in either case the theme is man vs. society In Antz, there is talk of a utopia where individual recognition does exist. In Anthem, there are the “Unmentionable Times” (the distant past) that were far more advanced, but they are “unmentionable”, and therefore don’t provide the same inspiration for Equality 7-2521 (later, Prometheus) until later in the book.

Also, wikipedia has summaries of both, and CliffNotes has a decent summary of Anthem here: http://www.cliffsnotes.com/WileyCDA/LitNote/Anthem.id-17.html

Hope this helps 🙂