The points are perforated and made of different textures for tactile discrimination work, also recommended to play blind. The extraordinary size of the chips helps us in handling, favoring the pressure on the workpiece. Ideal to stimulate tactile development. You can play in three modes: Normal Domino. Play directed by distinguishing blindfolded if the same record are the same material. Domino blind, Dominoes with normal rules but blindfolded, guided only by touch. Sensory development: - tactile perception - Visual perception. Cognitive Development: - tactile discrimination - Visual discrimination. - Development of attention and concentration. 15 solid wood chip giants 12x6x2 cm.