It can be said that all teachers are talents, but teachers should have quality when they grow up. In this case, the teacher will not respect the students. More should not hurt students' self-esteem! Teachers should immediately find their own mistakes and correct them, because teachers are role models for students to learn. Mobilize students to learn to ask questions and solve problems! In this way, students will not rely on teachers, let alone use their brains. As a student, it may be better to tell the teacher alone that this question is wrong after class. Let the teacher point out his mistakes in front of the students. To put it bluntly, it is a matter of face!