GRE math must remember more math vocabulary and do more real questions. New Oriental training is good. Teachers are generally top teachers with high teaching level. Taking part in that kind of training will definitely help you to review.
In addition, we should pay attention to two points when taking the exam: 1, time: because there is only 30 minutes, we should pay attention to controlling the time when doing the model exam; 2. Vocabulary: Be familiar with English vocabulary commonly used in mathematics before the exam. If you lose points because you can't understand the questions, you will be very depressed!
Good luck in the exam!