Once the child has gained some coordination and self-control, he is shown the Sensorial equipment.  It is our duty as adults to expose the child to many different sights, sounds, smells, textures, and tastes, wherein his intellect will be built up.  Theh child is keenly aware of order and small detail at three years of age and we need to take advantage of these sensitive periods and allow the child to explore these materials so that his senses will become refined.