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.
By building with the blocks, the principle of the arch can be learned and understood. The key to the secret of this arch is the ninth block located in the middle of the arch. If this is removed, the bow will collapse.