In fact, I think it is almost impossible for children to settle down and study if they are not very old, in the first and second grades. Judging from the child's development process, this time is just the time when children like to play most. It would be better if parents can guide their children to learn in another way from another angle. However, parents had better not study with their children, otherwise, in the future, when you are away, he will not want to study, and he will think that this is your job and you will be very tired.

Careless. I don't think children should be like this I think it is easy for us to be "careless" when we lack energy. Because we can't concentrate on one idea. I think children are always like this in exams and classes. They may have exhausted their energy and could not concentrate. Therefore, we can't just look at a child's grades. Like you said, she said both. There are two possibilities: first, she really knows, but for some of the above reasons, she made a mistake in the exam. Second, she doesn't like you to teach her, so she perfunctory you.