Modern mind-mapping is said to have been developed by Alan Collins in the late 1950s and was promoted by Tony Buzan in the 1960s and later in popular books about memory and study skills. The non-linear approach of mind-mapping helps those who like a more visual or holistic approach to thinking, learning, creating ideas, solving problems and revising and memorizing complex material.
What is A mind map？
A mind map is a diagram used to represent words, ideas, tasks, or other items linked to and arranged around a central key word or idea. Mind maps are to generate, visualize, structure, and classify ideas.
Why are mind map always mentioned for college
Mind maps are used as an aid in study (revision), note-taking, problem solving, decision making, and writing.
In the video clip（unit 3，book1） a teacher presents ideas about mind maps. Mind maps are diagrams which help to brainstorm ideas and organize them in relation to a topic. They give an overview, help us to understand connections, and are useful for revision and problem-solving.
The advantages of mind maps are that they are visual ways of making summaries of key ideas and connections, and because they are illogical they help us to think creatively. The teacher also shows the students how to construct a mind map, and the features of the design of a mind map.