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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 writing down the solutions for addition, the children's ability to learn deepens. The complete booklet for each child can be used to memorize. The exercise sheets are delivered in five series.