Description :-
The Brown Stairs Prism is a foundational Montessori material used to introduce children to the concept of dimension, size, and gradual progression. It is part of the sensory materials that help
children develop an understanding of size, order, and measurement, which are essential for building mathematical and spatial reasoning skills.
Brown Stairs Prism
1. Composition and Structure:
o The Brown Stairs Prism consists of a set of wooden blocks arranged in a staircase- like configuration. Each block in the set is a rectangular prism (a three-dimensional shape) that progressively increases in length (or height, depending on orientation),
starting with the smallest block and gradually growing larger.
o The set usually contains 10 blocks, each with a different size. The smallest block measures 1 unit in length, while each subsequent block increases in size by 1 unit.
The largest block measures 10 units in length, so the set is designed to help children explore size differences in a linear progression.
o The blocks are typically finished in a rich, dark brown color, making them visually distinct and appealing to children. The blocks are smooth, with no sharp edges, ensuring safety during handling.2. Material:
o The Brown Stairs Prism is traditionally made of high-quality hardwood, usually beech wood or a similar durable material. The wood is sanded smooth and finished with a natural wood polish or non-toxic paint, ensuring that it is safe for children to handle.
o The wood is designed to be long-lasting, withstanding regular use in a classroom or at home.
3. Size and Organization:
o The blocks are often stored in a wooden box or tray, with individual compartments for each block to keep them organized. The compartmented box ensures that the blocks are easily accessible for children and helps them learn the concept of order as they arrange the blocks from smallest to largest.














