:-) problem of the large sized lecture! These days, in most universities, the proportion of the large-sized lectures is increasing. What is the large-sized lecture? Literally, it is the class which mostly over the 50 students study together in one classroom. The reason this situation happens is that universities get many requires to lower the tuitions. In many other ways, mostly they make a decision to increase the number of students in one class because it is easier than other ways. When they do it, they can reduce the cost spending on the instructors. However, It basically causes a lot of inconvenience for students related to instructions and ultimately bad effects to their studying. In detail, when students study at back seat, the distance is too far, they can't see well the blackboard or screen. It makes them hard to take notes. Also, the thought that professor may not be able to see them sometimes makes their concentration gets bad. For example, they send text messages, chat with their friends, and even sleep. Second, it makes passive instruction. When there are too many students in class, it is hard for professor and students to interact. Professor delivers knowledge unilaterally and students only concentrate on understanding the meaning and taking notes. It is not good for students to develop their academic ability think profoundly and creatively. Third, it is hard to check the attendance. When professor or assistant calls an attendance, because they can't match all students' faces and students' names, they can't check certainly. So, some bad students abuse it as substitute attendance, and even leave the class in the middle. The students who are often absent will miss the points professors emphasize, so they will get bad grades.