Also called Daily Living, the work in this section sets the stage for all that is to come. Concentration, the first essential of human development, is the main focus. However, through this work the child also learns patience, critical thought, independence and the ability to care for himself, others and his environment. From birth to three years old, the classroom is composed mostly of practical life work. Gradually, sensorial, language and math materials appear as the child approaches three years old. Over the next few years he will spend a great deal of time with partical life work -not so much because the teacher directs him there, but because he is drawn there by his own internal interests.