It has been suggested that teachers use their voices for anywhere between 60% and 75% of their workday. The strain on the voice gets worse when the teacher has to talk louder to overcome poor class-room acoustics.
Studies have shown that teachers are 32 times more likely to have voice problems compared to other comparable occupations.

Altering classroom acoustics can not only help reduce distractions for the students, but can also help reduce teacher vocal abuse. 

* Place some rugs or carpet in ...

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