Why do I always don't understand when I have math class with my classmates? The concept of the example given by the teacher is completely incomprehensible.
Maybe you haven't adapted to the teacher's teaching ideas, and everyone's learning methods and learning ability are different. Some people can teach themselves, while others have to be taught to understand. It is suggested to communicate with the teacher more, talk to the teacher, understand the teacher's teaching ideas and let the teacher know your learning style.