When I was marking the assignments of my students, I noticed that they had written good answers, but in the quiz given in class, many of them had performed badly. So when I saw my students in the next class, I asked them whether they had understood the topic properly. Most of them were silent! I asked them if they had understood the topic, then they should have scored well in the quiz? They all kept quiet.
Then I asked them, "How do you find out that you have understood the topic well?" Some of the responses were, "I make notes and read them", "By doing quiz, I know how much I have understood", "When I present my Power point slides and explain the concepts. I know how much I understand", "I just know that I understand", "I know how much I know when I teach my teammate", etc.
I told them,"Yes, those are some of the ways by which you can find out about the extent of your understanding. But what happens if there is no quiz, or presentation or teaching opportunity available to you? When you are learning the concepts and preparing the notes on your own, then how to check your own understanding?"
I shared with them the method I have used myself during my own student life and even now. "After having completed the notes whether in classroom or at home, I close my eyes, and try to recall the main headings or parts of the topic (as if along with the brain, my heart is also telling!). Usually there is a pattern, and concepts are covered in points or sub-divisions. So if I am able to recall all the points or steps involved, it means I have understood the topic completely. If I remember only the main points, but not their details, it means my understanding is not comprehensive yet, and I need to learn more. If I have difficulty in recalling even the main points, then understanding is poor; as simple as that!"
"When the understanding on the topic is not complete, there is some action required by us. First, we have to relook at our notes, and supplement them by adding some more examples. Also following a similar pattern of sequence across different topics while preparing the notes helps; e.g., in the module I am currently teaching, Human Anatomy and Physiology, we learn about the structure of body parts and their functions. We also cover the medical conditions related to that particular body system and their treatment options. So there is almost a set pattern, of structure, function and disesases of the body part/system. Sometimes linking with earlier topics helps us to remember better, as different systems are linked and affect one another."
I call this my 'self-check' method and when I apply this method even today, I can 'sense' with almost complete certainty whether I have understood the topic or not!