Let students know the function of ruler, give them special training in teaching management order, and let them know that ruler is the red line for observing discipline and not observing discipline. If anyone is not disciplined, let the students who make mistakes experience the punishment of the rulers, and then try the feeling of slapping and clapping their hands. Clapping the palm of your hand is a warning and has a slight pain. If you don't correct it, slap your hand next time.

Let the punished students talk about their feelings. On the premise of recognizing their mistakes and actively correcting them, the punished students will tell the whole class how they feel after being punished by the rulers and whether they dare to continue to violate the discipline. The principle of using the ruler should not be taken lightly: the principle of three mistakes should be followed. For the same type of mistakes, the first reminder will not work, the second warning will not work, and the third punishment will be used.

Ruler, a plank used by teachers in private schools to punish students in the old days. Also called a ruler, it is made of two pieces of wood. The two trees incline upward and downward. The upturned person is seven inches and six minutes long, six minutes thick and one inch, and there are wisps of faces on the four sides below. The person leaning on the top is seven inches and four minutes long, five minutes thick and one inch thick, and there are wisps of faces all around. Put up a wooden buckle in the middle of the upper wood, which is two inches and five minutes long and seven minutes high. Grab the button and knock on the wood below.