Does kindergarten teacher use loudspeaker in class to influence baby?
4 doctor: the correct use of good is no harmDirector of hearing and balance medical center of Nanjing large affiliated hospital has been engaged in clinical treatment of Department of ENT for a long time. He said that 8 year old children and adults can withstand the same number of decibels, the damage to the eardrum, and cumulative time and sound intensity are related. Generally speaking, less than 80 dB belongs to the safety intensity, and the cumulative time will not cause damage. The sound intensity of 90 decibels or more, more than 8 hours a day, is a prerequisite for the diagnosis of "noise induced hearing impairment".Amplifiers generally do not exceed 80 decibels in the course of teaching, so they do not adversely affect the eardrum. On the contrary, the correct use of it is good for both students and teachers.The history of Bonnie confirmed that teachers often use the voice of overload, really is a high risk of chronic laryngitis, vocal polyp, vocal nodules and other diseases, such as chronic laryngitis and difficult to cure, the use of loudspeakers can relieve the symptoms of these diseases.The reason for the discomfort, he reckons, is not the sound intensity of the microphone, but the sound quality of the amplifier. A poor quality loudspeaker can make people feel bad. So he suggests using high quality loudspeakers.
1 parents: worried about the sound too much harm to children's hearingHas been holding in the palm of the little grandson to school, Yu lady worry about, after school, she has been asking the child: "school is good?"" "Can the teacher listen in?""But Jingjing always pursed his lips and frowned. "Well, it's not good at all. The teacher is so loud in class that I don't want to hear it."."On one occasion, Ms. Yu deliberately went to school to pick up the children. Standing outside the classroom, she saw a small microphone on the collar of her teacher and a loudspeaker over her waist.The loud voice of the teacher passed through the loudspeaker to her ears, which made her understand why the child complained. What worried her more was that such a loud voice could hurt the baby's young ears.The night before, Jingjing had been in a mood and said, "never go to school again."". Ms. Yu became more worried.Ms. Yu said she also found that classrooms in the first 4 classes were equipped with audio amplification equipment.
2: school teacher to reduce excessive use of the voice.Why do teachers wear microphones in class? Yu, a teacher at Wang Shengling elementary school, said that the school only provided audio amplification equipment for 4 classrooms in the first year, and that it could only be used for about half a semester.He explained that the first grade children graduate from kindergarten, still can not fully meet the primary school life, school teacher attention is not easy to concentrate, inevitably emphasizes classroom discipline, a class down the throat will shout "smoke". In order to protect the teacher's voice, the school was equipped with a megaphone for teachers, and only for Chinese and math teachers.As for the senior class, Yu said that the school had no plans and that it should be a personal act of the individual teacher. "It might be because the teacher's voice is uncomfortable one day, and he wants the students to hear the lesson clearly.". The teachers have great pressure on teaching. They lecture on chalk and dust every day. There are many cases of throat inflammation. I hope everyone can understand and forgive them."
3 survey: loudspeaker teaching is very common in primary and secondary schoolsReporter survey found that all primary and secondary schools in Ningbo are using microphone teaching in varying degrees. Many teachers also spontaneously buy loudspeakers. They also refer to this kind of portable small loudspeaker as "little bee"".Jiangbei District, Jiang Hua Primary School Headmaster Wang told reporters that their school teachers are also using loudspeakers in class, but few, generally is a teacher at the throat was pain, in order to ensure the quality of teaching and use, the school does not encourage, nor against.The teacher of Chinese teacher at Rong Xu primary school in Jiangdong District is a Chinese teacher. He often reads texts aloud when he is in class. Many of their school teachers have bought loudspeakers, but not very frequently, she says. "Our teachers basically have sore throats. It's not easy to manage a class of more than 40 students. Now children are very naughty, especially some lower grade students are difficult to manage, in addition to extra-curricular, but also discipline, in a word, repeat many times, very costly voice.""As far as I know, the general schools are not advocating the use of it, but the Education Bureau has not explicitly stipulated that it can not be used."." The Yinzhou District Education Bureau Chief of general education department Zhu said, what is the use of loudspeakers outweigh the disadvantages, or more harm than good, there is no research, should use, how to use, generally by the school to decide.
