The set is a set of 36 cubes, on the edges of which the letters of the Russian alphabet, punctuation marks, numbers and signs of mathematical operations are written. Thanks to the special design (a protrusion on one side and a hole on the other), the cubes can be fastened together. Thus, you can make up words, sentences, examples. Since the cubes can only be fastened in a certain way, the child will not be able to place them incorrectly (mirrored or upside down), which is important at the learning stage, so that misconceptions about the letters do not form. The number of letters, numbers and signs on the sides of the cubes was chosen taking into account the frequency of their use and allows you to compose rather complex words, sentences and examples. Cubes' edge length: 1.5 cm. It is convenient for children to hold and fasten them; during the game, fine motor skills of the hands are trained. When composing words from cubes, several channels of information perception are involved at once: visual and kinesthetic (sensory), which contributes to better memorization.