Most students think that their MEMORY is at fault when it comes to LEARNING. It is a misconception. The actual problem is the mismanagement of their study/revision schedule.
The Curve of Forgetting above shows the natural progression of our memory with time.
The probability of recall declines within 24 hours unless we make an effort to revise the lesson material within 24 HOURS so that our memory picks up again. So ......
REVISE WITHIN 24 HOURS!!!