It may not always be easy to remember what you study. Have you ever studied really hard just to blank out on a test? Have you studied for a long time but had a hard time remembering all of the information? There are ways to study that will increase your understanding and memory. There are ways to study effectively and so that you can spend less time studying and get better results.
Space out your study time to help you remember what you study.
This is called spaced trials and it is well researched. For example, if you are going to study for 3 hours for a exam, then study for 30 minutes per day for 6 days instead of 3 hours the day before the exam. You will remember much more information and for a longer period of time that way.
Use more than one sensory process while studying.
For example, reading information will help you to learn it, but reading it, then making and looking at visuals (such as diagrams that you color code), then verbally summarizing the information, then listening to it, actually uses multiple senses. This will help your recall of the information.
Use study tricks, such as mnemonics.
Do you remember "Please excuse my dear aunt Sally?" The first letter of each word (in order) represents the order of operations (each operation starts with the same first letter as a word in the phrase) in math. It is easier to remember that phrase, though, than it is to remember "parenthesis, exponents, multiply, divide, add, and subtract." You can use these tricks for long lists or to make associations. They will help you remember information.
Multitask in order to save time