Counting, perception of length, width and height measurement and comparison of dimensions and sizes, comparing sizes and forms, etc. experimentation. Pearl material represents the decimal system and the kids love the game of bank and exchange, they carry out at first unconsciously, later with purpose, manipulation of the numbers in the thousands. Children’s thinking is characterized by a sense of precision and real fact. First, the child gains experience in working with the practical and material sense and then transferred to mathematical aids: through play with them, they learn very easily and quickly. Progressing from the concrete to the abstract. The specific mathematical tools help to understand the mathematical laws, support ingenuity and a desire to experiment.