Mind maps, a special type of diagrams with its specific structure and way of creation, could be used in the process of teaching. The paper includes the main principles of mind map forming, with examples of their use and the main results that are achieved by using mind maps in teaching various subjects and working with students of different age. The results of our investigations show very significant effects concerning students’ memory and knowledge, as well as their motivation and cooperation during teaching. The paper also includes the mind map created during one school lesson on the topic of The French Revolution (1789), in the seventh grade of the elementary school.