Aristotle was quoted as saying “Nothing exists in the intellect that was not first in the senses.”  The sensorial activities enable the child to order, classify, and describe the multitude of sensory impressions bombarding them every day.  The sensorial materials are designed to isolate particular elements (such as length, width, temperature, mass) and the materials are self-correcting, thereby helping a child to absorb each lesson independently.  Children develop an internal intellectual order and build logic skills required for future learning.