If the teacher is a good teacher, it is normal to punish the child physically, as long as it is not excessive insults and personal attacks that hit the child's self-confidence. To tell the truth, today's children are too arrogant, and caring for no reason is not the way of education.

As you said, children can do problems at home, but teachers can't do them when they call for answers. This situation is too stressful.

I suggest you get to know the real situation before the teacher and other students and children. If there are no mistakes, then tell the teacher. You can explain the child's situation to the teacher first, and then discuss the solution with the teacher. In this case, teachers should reduce the pressure on children through encouragement. It doesn't matter what you eat. You can bring some small gifts when you go.

Ancient Confucius should teach students in accordance with their aptitude. Different children have different personalities and educational methods. Of course, there are so many students in a class now, it is impossible for teachers to take care of them comprehensively, and it is impossible for teachers to clearly understand the situation at home. Similarly, the teacher's situation cannot be taken seriously just by listening to the children. You and I both come from children, and there may be many lies, because what language ability says may not be comprehensive. You have to understand for yourself that you must be careful in educating children.

After you have a clear understanding, you should give your suggestions to the teacher. Pay attention to your attitude and tone (teachers are also very tired when teaching a group of children, so don't arouse their disgust). The focus is on how to solve children's problems. You have to understand this and don't deviate from the direction.

To sum up, if you do as I say, I believe a good teacher will understand a parent's painstaking efforts and adopt your suggestions to solve children's problems (of course, you should also encourage children's courage at home).

Give children some time and give teachers some understanding (although there are many reports of online junk teachers, and many teachers have degenerated materially due to social problems in recent years, most of our teachers were great when we were young, and teachers who only paid two months a year were everywhere as usual)