Review

One of the keys to retention of information in long-term memory is regular review. 

When to review

A timetable that includes one hour of review per week is much more effective than ‘cramming' for many hours in the days just before the exam.  It is best to carry out these reviews when you are most alert.  It is also important to start your reviews at the time when you can remember most - about ten minutes after the first learning session. 

Why review

A person can forget 80% of what they learned within 24 hours if they do not review.  Therefore, review 10 minutes, 24 hours, and then weekly after learning.