There is nothing worse than sitting for an exam and your mind going completely blank. Don't worry because everything will eventually come back to you if you keep calm. Remaining calm is the most important thing at this time, because the more you panic the harder it will be for you to recover.
The fact that your mind has gone blank indicates that you are suffering under pressure so the first step towards recovery is to stop worrying about the exam. Think of things other than the exam. Think about a joke, a TV programme or a friend.
When you've calmed down you will be in a position to start getting your brain working again. The first thing to do is to read through the question again. If you've already answered some of it, you can read through your answer. Then read through any other questions you've attempted.
Think back to similar questions you've seen during your revision. Think of the books you read and try to picture your course notes and your revision notes in your mind. This can help focus your mind on the relevant parts of your revision.
You will notice that the basic technique for getting unstuck is to think of your revision and not of the question you are actually trying to attempt. In effect, you are trying to get into your memory via the back door. Normally this technique effectively gets you to spark the relevant memory areas with the hope that you will suddenly come across something relevant to the current problem.
A. Usually you can solve the problem smoothly.
B. That will get the question straight in your mind again.
C. Try also to picture any model answers you've seen before.
D. The first thing you should do is to relax and breathe deeply.
E. Relax and take your mind somewhere for the possible answers.
F. It doesn't matter what it is so long as you take your mind off the current problems.
G. You may be halfway through a question or you might not have even started writing.