It\'s so difficult to solve all of this...^^;;

First, I take notes as much as possible during school class so that I can study even when I get home. When I get home, I review the problem book and look at the notes. When reviewing, review mainly the textbook, and the preview when you fully understand the previous process. The way to tell if you understand is to solve the unit evaluation, or draw a mind map on a blackboard, etc., or explain it to someone around you without looking at it. If the listener understands, or if you can answer a question you have, you have a complete understanding. During the exam period, study the exam subjects first, leaving everything else second. During the exam period, continue to read the textbook and solve the problems several times. Anything that falls within the test range is unconditionally organized and made my own test notes. You must finish everything one week before the start of the exam, and continue reading, explaining, and finding out what you did not understand during the last week.