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Montessori materials are NOT toys, but educational materials. Proper use requires appropriate training.
Montessori materials may contain small, rough, sharp, or other elements that could cause injury or damage if used improperly.
It may therefore only be used by children under the supervision of appropriately trained persons and in an appropriate environment.
With the help of cubes and prisms on the basis of a cube, 1 x 1 x 1 cm potencies with 2 and 3 can be laid out and compared on a tray. The printed circles belonging to the material are intended to symbolize and classify the quantities of the material.