A child collects information and sensations through the senses. The first level of development is sensory motor skills.
Sensations of movement and gravity help him to develop postural security and motor planning. Information from his joints and muscles help him develop an awareness of both sides of his body and reflex maturity. Visual, olfactory, gustatory, auditory and tactile experiences foster his ability to screen input. All of these sensations and experiences allow him to develop body scheme.
Play and exploration that includes the opportunity to manipulate materials is how a child collects sensory information. Perceptual motor development occurs when he can make sense of, and interpret the information and experiences.