If you cannot remember something,you can write it on a sticky note.If you get time to revise just before the test or on the morning of the test, just read the notes as trying to study from the textbook at the last moment will not help.
While studying, if you write all your doubts on a sticky note and stick it in your notebook or textbook,it will always be with you in class and you can clarify your doubts with your teacher whenever you are free.
