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.
These are great for pre k, kindergarten, prep, grade 1 etc to find out and learn their address. I usually send these home to gather the information from the family and then the children bring it back to school for me to type up using dotted fonts. The children then practice writing their address and phone number.