 
           
           
           
          Please note:
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.
In addition to the potencies with 2, there is also a sentence for calculating with potencies with 3. In this way, the volume increase is very clear for the children.