The child understands the entire world around him using his senses. The sensorial materials isolate impressions of taste, sight, smell, touch and hearing and allow children to develop a deeper awareness of their world, while building vocabulary around these distinguishing characteristics. These materials assist children in refining their sensory experiences from awareness of taste, to visual and auditory discrimination, to the development of fine motor skills required for writing. Each level provides the children with age-appropriate materials that stimulate their senses, encouraging them to explore and build on the impressions they have already acquired. These materials allow children to pursue their natural tendency to classify sensorial impressions and sort by size, shape, color, touch, sound, and weight. The sensorial materials isolate specific qualities, have a built-in control of error and make abstract qualities concrete. The repetition of sensorial activities lays a foundation for math, geometry, geography, botany, and music.