The Chinese teacher went to the blackboard to wipe the blackboard, but he couldn't find it. The teacher asked: who knows where the eraser is? No one answered In the second Chinese class in the morning, the blackboard was full. The Chinese teacher went to the blackboard to wipe the blackboard, but he couldn't find it. The teacher asked: who knows where the eraser is? No one answered "Have the students on duty cleaned the blackboard after the first class?" "Yes, it's on the slot of the blackboard after cleaning," the student on duty replied "So who moved again?" the teacher asked No one answered. Some of the students were laughing, some of them were elated, and their eyes glanced at the top of the blackboard from time to time. Suddenly, the teacher understood everything. Someone was playing a prank and hid the blackboard eraser \If you are the teacher, how will you deal with this incident?

The Chinese teacher went to the blackboard to wipe the blackboard, but he couldn't find it. The teacher asked: who knows where the eraser is? No one answered In the second Chinese class in the morning, the blackboard was full. The Chinese teacher went to the blackboard to wipe the blackboard, but he couldn't find it. The teacher asked: who knows where the eraser is? No one answered "Have the students on duty cleaned the blackboard after the first class?" "Yes, it's on the slot of the blackboard after cleaning," the student on duty replied "So who moved again?" the teacher asked No one answered. Some of the students were laughing, some of them were elated, and their eyes glanced at the top of the blackboard from time to time. Suddenly, the teacher understood everything. Someone was playing a prank and hid the blackboard eraser \If you are the teacher, how will you deal with this incident?

The student may not like the class or the teacher, or it may be to attract attention
Analyze the advantages and disadvantages with the students and let them take the initiative to find out the blackboard eraser