(2) The content of children's learning should be necessary for children's study and life now or in the future, or something of great value to the development of children's basic quality:
(3) The content of children's learning must be transformed into children's own activities with appropriate difficulty;
(4) The content of children's learning is related to their life experience;
(5) There must be an inherent logical connection between what children learn;
(6) What children learn should be of interest to them.