It’s a lesson worth learning: Teachers who try to do the best possible job for their students need to take care and preserve what may be their most valuable teaching asset––their voice.
Teachers are among those professionals who make great demands on their voices; they talk all day long in the classroom and have to project loud enough so that all their students can hear them clearly. Unfortunately, this stress on the voice can lead to health problems.
Some 7.5 mil...
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