A child in his earliest years, when he is only two or a little more, is capable of tremendous achievements simply through his unconscious power of absorption, though he is himself still immobile. After the age of three he is able to acquire a great number of concepts through his own efforts in exploring his surroundings. In this period he lays hold of things through his own activity and assimilates them into his mind.
Maria MontessoriAt a given moment a child becomes interested in a piece of work, showing it by the expression of his face, by his intense attention, by his perseverance in the same exercise. That child has set foot upon the road leading to discipline.
Maria MontessoriThis system in which a child is constantly moving objects with his hands and actively exercising his senses, also takes into account a child's special aptitude for mathematics. When they leave the material, the children very easily reach the point where they wish to write out the operation. They can thus carryout an abstract mental operation and acquire a kind of natural and spontaneous inclination for mental calculations.
Maria MontessoriDo not tell them how to do it. Show them how to do it and do not say a word. If you tell them, they will watch your lips move. If you show them, they will want to do it themselves.
Maria Montessori