1, Memory needs early training, and training begins when the child is in infancy. In fact, many parents also use it, for example, on the road, parents tell their children which street it is, which building it is, etc., and after the child sees it, he/she will say it out, which means that the child remembers it after seeing it. Memory should be trained early, but it can also be trained during the primary school stage, and the training effect is relatively strong.