Teaching children from 4-12 years old
Mental arithmetic is a program for the development of mental and creative abilities based on the oral counting system. Having mastered it, the child will be able to solve arithmetic problems in his head in just a few seconds. The technique is recommended for children from 4 to 12 years old. However, modern development centers are ready to teach older people, as a rule, with one caveat - the later you start, the more effort will be required.