Let's just say. First, we should master the thinking of doing problems when studying. Remember, it's the idea of doing the problem.

The second is to cultivate a sense of numbers. Just like learning English to cultivate a sense of language. Especially important. And it is necessary for high school mathematics study and even college, which can save effort for the future.

It is also important that all mathematical problems can be solved by graphics. Both will do. So pay more attention to experience and accumulation in your usual study and life.