individual difference
Because every child has unique characteristics, there are individual differences in physical and mental characteristics of children of the same age. Therefore, education should focus on the all-round development of physical, intellectual, moral and aesthetic aspects according to children's personal potential and characteristics, which means "focusing on everything".
teach students in accordance with their aptitude
All-round development is the goal of teaching students in accordance with their aptitude, and teaching students in accordance with their aptitude is the premise of individual all-round development.