We should start at the age of three. Children around the age of three can recite short poems and stories. At the same time, they can train children to put toys or small clothes somewhere so that children can find them purposefully. This is a good way to cultivate their memory. Reading and counting are also ways to exercise memory, which can be done alternately.

Exercise your thinking and imagination, first exercise your ability of analysis and classification. You can let children recognize something from some toys or furniture, and you can also teach them to distinguish their little hands and feet from their five senses.