It is probable that few teachers give the same amount of time and effort to training auditory discrimination that they give to visual discrimination—just as many of us have been fooled by a correct answer to a sum into thinking that the child understood the process involved. Faulty sequence such as 'ephalant' for elephant or 'bakset' for basket may be due to undeveloped aural discrimination. As aural discrimination develops, children become sensitive to very small differences and can distinguish between rustling tissue and newspaper—tapping a window with a wax crayon or a pencil—rubbing finger tips over sand-paper or corrugated paper. The calling of attention to rhymes, the use of mouth music, crescendo or diminuendo, speaking quicker or slower all help to develop sensitive auditory discrimination. Auditory discrimination allows us to turn sounds into meaning.