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Use an app like Noise Down, which will automatically sound an alarm when the decibel level gets too high. | 37 Insanely Smart School Teacher Hacks
The TooLoud! app is ideal for the teacher who needs to limit noise in the classroom environment. It records decibels, displaying the volume levels in numbers. Use it to let the class know when they cross the auditory line. Hook your iPad up to the projector and manage the working noise level in class by letting the students see the feedback for themselves.
monitor for noise level app
Math Fact Froggie Bundle: Smartboard, Printables, Game Board, and Task Cards
Math Fact Froggie Families: Smart Board, Game Board, Task Cards and Printables