A concept map is an information graphic which illustrates concepts and the relationship between the concepts in a hierarchical manner. The concepts are represented within containers and the relationship is expressed by lines connecting the concepts. The lines include a proposition or statement. The proposition is usually a verb.
I think the concept map is very much like an outline, except better, because a concept map makes allowances for cross-links and multiple connections between thoughts and ideas. Concept maps are also better for learning than mind mapping because mind mapping is not structured with different levels of specificity.
Concept maps are often used by teachers to assess the knowledge of the students, before and after the subject matter is taught. The maps are can by used by students not only to brainstorm ideas, but to organize thoughts in succinctly. An added plus is that once the concept map is developed, it is a wonderful tool to use as a study aid.
How to Make a Concept Map
Concept maps can of course be made with pencil and paper, no technology involved. However, one of the nice things about using a computer to produce a concept map is the ability to easily move and rearrange the concepts. Drawing programs like Adobe Illustrator and word processing programs like Microsoft Word can produce concept maps. However, an application developed specifically for creating concept maps might be a better choice as they are simple to learn and use.