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.
Original idea from @Pinterest Creative education for primaries .We can use this in foreign language learning with jungle animals A great way to develop jungle animals in target language.Maths measuring activity plus create a silly poem about animals and which are taller than the children