When the child first entered the first grade of junior high school, he did badly in the math exam. After a period of hard work, his grades didn't go up. I concluded that there was something wrong with his learning method. Later, when I heard about Gaotu class, I bought the above courses. The advantage of the high-figure class is that it can cultivate children's interest in learning, teach students what kind of learning methods, and cultivate mathematical thinking, problem-solving ideas and some problem-solving skills. I hesitated at first, but now I see that children's mathematical thinking is getting better and better, and I think the high-road classroom is worth emulating. Thank you for your question. I hope it helps your problem.