23+ Brown Stairs Montessori Purpose. The brown stair activity is designed to teach the concepts of thick and thin. It is a set of ten brown solid cuboids having same color and shape.
Put brown stair together, ask child to close his/her eyes and remove one of the prisms.
Preparation for the future mathematics; Montessori sensorial materials are materials used in the montessori classroom to help a child develop and refine his or her five senses. Width from 1 centimeter to 10 centimeters (or one decimeter squared). They are graded in width while the length remains constant.