 
           
           
           
          The 3 hollow geometric Metal Volume Containers
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.
With the Metal Volume Containers, the child discovers the rules for the calculation of volume.