Make sure you're clear about what you are being tested on. This may include date ranges, specific scientific theories, or mathematic equations. If you are unsure, as a classmate to verify what material you are being tested on. This is essential to your success, especially with such little time to lose. Divide up the hours in the day and decide what you will focus on when. Make sure you allow yourself time to sleep. Review the syllabus or any handouts given to you by your teacher. Figure out exactly what is being covered and create your own list of the material you need to review. Make sure that you are allowing yourself frequent breaks so that you do not burn out. Consider working for 45 minutes, and then taking a 15-minute break. During your break, feel free to check your email, use your phone, or get up and walk around. One way of creating a break schedule for yourself is the 50/10 method. Study diligently for 50 minutes, without distractions. Hold yourself accountable. If you stop or get distracted, restart the 50 minutes. Once you have had a completely undistracted 50 minutes, go on a 10-minute break. This will force you to be much more productive when you are studying. Create a list of the major theoretical or categorical concepts, and make sure you understand them. As you are studying last minute, it is most important that you understand the largest concepts first.  While you may be tested on small details, it is first important to grasp the large theories in order to give yourself a context for the smaller facts. Organize terms and facts according to these larger groupings. This is a technique called "chunking." It is easier to memorize individual concepts when you are putting them in relationship to a greater whole Usually, your teacher hands out a syllabus at the beginning of the year or semester detailing all the material that will be covered in the course. Refer back to the syllabus to ensure that you have not missed any areas of study. You can also use the syllabus to guide your study. There is a...

TL;DR in Vietnamese:
Biết chính xác nội dung cần học. Lập lịch trình. Liệt kê tất cả những kiến thức cần học. Nghỉ giải lao nhiều lần. Ghi ra các khái niệm chính. Xem lại đề cương.