The primary purpose of the sensorial activites is to assist the child’s efforts to sort out the many and varied impressions given by the senses. This is achieved by developing, ordering, broadening and refining sense perception. Sense perception is developed through exercises that build from simple to complex perceptual experiences. Ordering occurs as each apparatus isolates a single perceptual quality such as colour or taste and explores a range of differences within that quality. The child’s perception of the world is broadened by awaking sense experiences previously unexplored e.g. the feel of fabrics or the smell of spices. Sense perception is refined as the child concentrates on particular qualities in perfect clarity and isolation.