The skills are listed at the earliest age level and selected teaching activities cover all levels. Suggestions for learning opportunities or materials are included. These are skills which teachers look for as developmental milestones and predictors of readiness for other behaviors. Cognitive skills are the bedrock upon which language and social skills are built. At the same time, cognitive skills are quite dependent upon experience.
Experience is influenced by sensory perception and motor abilities.
So, in a very real sense, everything is tied together. According to Piaget, there are two major stages in the intellectual understanding of preschoolers. During the first two years, the sensorimotor period, they develop basic concepts about object permanence, spatial relation-ships, means for attaining desired ends, causality, imitation, and schemes for relating to objects. During this period, the feedback loop between sensory input and motor output is crucial. It is important for visually impaired and blind children to have many rich sensory experiences.