Memory plays very important role in study . long term memory is the type of memory used when we want to store information in a more permanent way. This is either done by making information especially memorable (like getting burned means not to play with fire) or by repetition. Ever try to remember a new phone number? How many time do you look it up before you remember it?
Course information is the same thing. If you’re learning something new it’s harder to remember. It takes constant review and trying to remember specific information before you actually can. Once something is transferred from short term to long term memory we say it has been learned. (or at least remembered).
Cramming fails because you’re relying on short term memory. This type is fairly unreliable. Where were you at 2:32 yesterday afternoon? Your brain once knew. Maybe there was a crime in your neighborhood and the police want to know. Short term memory fails under stress. You doubt your memory. The same thing happens when you take an exam, it’s stressful. What’s the value of PI? Well I learned that yesterday….