Article in English: Do you need to improve your grades in only one class, or many?  Do you have assignments left to be submitted, or only the final exam?  Make a list of all the classes you currently have, what needs to be done for each class, and the due dates for all assignments and exams. In order to get the “big picture,” use a calendar to mark out all your assignment due dates and exam dates. Sit down and think about how you’ve been studying up until this point.  Analyze what has worked and what hasn’t - then ask yourself why.  Make a list of things you want to avoid doing in the future (e.g.,  procrastination) - and don’t do them.  Figure out what your motivations for studying are and take advantage of them. This is a good opportunity to learn how to do a S.W.O.T. (Strengths Weaknesses Opportunities Threats) analysis.  The SWOT analysis method was designed for businesses, but can easily be adapted to your personal academic situation. Ask your teacher(s) for advice on how you can improve, and where you might have gone wrong.  Keep in mind that this conversation could go one of several ways.  If you’ve been a lazy student up until this point, and you’re now asking for help, some teachers are not going to be impressed.  Make sure you approach them sincerely and then actually follow through on their advice.  If you ask for their help and then don’t follow it, they’re probably not going to be too thrilled to help you again in the future.  Ask your teacher if there are any assignments you can do for extra credit. Ask your teacher if you can hand-in any outstanding assignments, even those past the deadline.  Or if you can re-do any assignments you did badly on. Ask for help as soon as you know you're having trouble. Do not wait until the last minute to ask for help, or to ask for things such as extra credit. In most cases it will be too late for you. Your parents don’t want you to get bad grades, and if you admit you’re having problems, they will likely want to help.  Even if all you need them to do is constantly follow-up with...

Summary in Indonesian:
Lakukan evaluasi performa belajar sejak awal semester dan catatlah tugas yang belum diselesaikan. Kenali metode belajar yang kamu terapkan saat ini. Berkonsultasilah dengan guru. Ceritakan masalahmu kepada orang tua. Buatlah jadwal belajar dan biasakan menjaga kerapian. Manfaatkan waktu sebaik mungkin untuk belajar sampai tuntas. Buatlah rencana untuk semester atau tahun pelajaran berikutnya. Ikuti semester pendek.