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The Montessori materials used in Mathematics are simple, interesting, easily understood and handled by teachers with self-correcting element.  Example of these materials are the Golden Beads, Number Rods.  Many of the Sensorial materials have mathematical relevance like the Cylinder, Pink Tower, Broad Stairs, Geometric Cabinets and Cards, etc.  Children learn mathematics from concrete to abstract such as the use of number names associated with objects like “one pencil”, “two girls”, etc. This is an introduction of verbal numbers and their quantity.