I think it is very useful. The key is what children can get by punching in. Let him know that his efforts will pay off, so that he will also take the initiative to punch in. If simply punching in is really not enough to attract children, just like signing up for class, he won't find it fun. Or you can try a series of early education machines that Niu listens to. Personally, I prefer reading robots with picture books, because I can also read picture books, which are rich in resources and functions. ) The punch-in function can be used to exchange cattle currency, and then it can be used to exchange peripheral or small gifts. My children especially like this function.