I don't recommend it. The child has been studying for almost a year, counts easy three-digit examples (without going through a dozen), and 3 + 4 add up, 5 + 8, 8 + 3 and many, many other unambiguous ones cannot be calculated using this technique, because this has not yet been taught. The training is stretched, designed for long-term pumping out of money. The teacher is good, but everything is dictated by the director. Parents lead their children with the hope of some kind of wow effect. But whether it will be, you will find out only after 3 years. If you are ready to regularly unfasten and infinitely adjust to laggards and beginners, try it. The main thing is that the child does not have time to graduate from school before he studies soroban)))

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