One of the key responsibilities of a Montessori adult is to encourage concentration. Once the child begins to focus, the adult must do all they can to protect the concentration and avoid disturbance to the child.
“But in our specially prepared environments we see them all at once fix themselves upon some task, and then their excited fantasies and their restless movements disappear altogether; a calm, serene child, attached to reality, begins to work out his elevation through work. Normalisation has been achieved.”
Dr Montessori, Secret of Childhood