According to the different internal psychological mechanism, the keyword "internal" itself does not change the original cognitive structure, but adds examples on the original basis, that is, assimilation and migration, such as "giving inferences by analogy" is only an example and a change in quantity; If the original cognitive structure is changed, the original experience is expanded and modified, resulting in qualitative change, that is, adaptive transfer, such as "after learning 0 and positive integers, the concept of numbers is re-recognized" and "re-recognized", so it is reflected in changing the original cognitive structure; However, when the original empirical components remain unchanged, the combination and relationship between the components have changed. Even if the original empirical components are adjusted and reorganized, it is also a reorganization transfer, such as "Mathematician Gauss solved'1+2+3 ...+99+100 =? ",with10/kloc-0 /× (100 ÷ 2) = 5050", the number is still100, which changes the order and combination relationship, that is,1+100.