Memory may be unreliable. It may let you down. Your notes provide a summary from which to study. Making notes encourages you to put the main ideas down on paper, in your own words. This makes them easier to remember.
Notes expand on the information in the textbook.
Instructors and class discussions add current real-life ideas, examples, and explanations. Written Notes Develop your own notemaking style, so that your notes make sense to you when you review them at home. Think of your notes as an outline. Use headings and sub-headings. List items 1,2,3, etc.