There are certainly many ways to have students compare things and to represent that comparison visually. Even more well-known than the comparison-contrast chart is the Venn Diagram . The Venn diagram is also very useful, as long as we keep in mind that the real value of a Venn is in the DOING of it...they work best when we have students, not teachers, determining what the relevant similarities and differences are between two or three concepts, people, places, or ideas. The website offers several types of comparison-contrast charts and Venn diagrams, which can be downloaded and printed out from the links below.
Compare and Contrast
Graphic Organizers compare - to examine (two or more objects, ideas, people, etc.) in order to note similarities and differences; to compare two pieces of literary work (Webster's. p 416): contrast - to compare in order to show unlikeness or differences; note the opposite natures, purposes, etc., of: Contrast the political rights of Romans and Greeks (Webster's. p 442).
compare liken, assimilate, similize, liken to, compare with; make or draw a comparison, analogize, relate; metaphorize; draw a parallel; match; examine side by side, view together; weigh or measure against, contrast oppose, set in opposition, set off against, set in contrast, counterpose, note similarities and differences (Chapman, 1977) .