Therefore, articulate your policy about late in your syllabus and on the first day of class. Second, student doesn’t understand what the teacher teaches. Today is a concern problem because each of classrooms has a lot of student so the students have good and not good student. A good student pay attention white bad students talkative all time made them don’t understand the lesson. Moreover, some teacher can not teach the student to understand it have many reason such as teaching plan or speaking strategies. For stance, engage students several strategies for engaging students in the classroom, and many of them have been written about under the umbrella of effective teaching strategies and student-centered approaches. The reality is that any strategy that utilizes the following will engage students and require that their attention is devoted to the class and not to other pursuit, ask questions and require students to write responses. Then ask again and have them read their answers to the class and have students respond to questions about readings or a previous class activity and bring those answers to foster peer discussions. The boring class made the students does not want to learn and bored on class. All university or school have all had the experience of having students sitting in our classes, looking directly at us, and knowing, just knowing, that they are not paying the least bit of attention to what the teacher talking about or what the topic of the day is. In fact, if don’t see this in our classes , all an instructor has to do is review assignments, quizzes, or exams to find evidence that students don’t understand key concepts that were highlighted as really important or critical to understanding the material. These kinds of strategies have proven effective with students who do not respond well to more teacher-directed classroom settings. However, teacher will need to introduce these approaches gradually, teach your students how they work, and have your students practice them until they become familiar. And chances are you will have to re-teach them periodically to keep your students in practice.