Dr. Montessori regarded movement as an essential element in a child's intellectual development. Part of the magic of all Montessori's materials comes from the movement routines associated with their use. The brain stores, processes, and retains information more efficiently when stimulation produced by movement supplements the information perceived by the senses.
"Our new conception stresses the importance of movement as a help to the development of the brain, once it is placed in relation to the center. Mental development and even spiritual development can and must be helped by movement. Without movement, there is no progress and no health (mentally speaking)." (The Absorbent Mind).