The desk bells set is a set of classroom teaching aids that includes small bells of different tones. Teachers can use them in the classroom to attract students' attention or as signals for classroom activities. These bells are exquisitely designed and have a crisp sound that can immediately catch students' attention without causing discomfort to their listening. During the teaching process, teachers can start or end the lesson by ringing the bell, or remind students to concentrate when they are distracted. In addition, bells can also be used for classroom management, for example, during group discussions, teachers can designate bells with specific tones as signals for the end of the discussion.