The Broad Stair
The broad stair (also called Brown Stair) is designed to teach the concepts of "thick" and "thin". It comprises ten sets of wooden prisms with a natural or brown stain finish. Each stair is 20 cm in length and varies in thickness from 1 to 10 cm. When put together from thickest to thinnest, they make an even staircase.
As an extension, the broad stairs are often used with the pink tower to allow the child to make many designs.
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The pink tower and the broad stair are shown here together in an extension activity. The child can make a variety of designs limited only by his or her imagination and the constraints of the material.
Read more about this topic: Montessori Sensorial Materials
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