Teaching methods should be reflected in the classroom, so that these ideas and methods can be activated and applied to students.

Externalization of thinking, explicit teaching teachers should follow the way from the inside out when teaching thinking methods, that is, refine the thinking methods or ideas in their minds, consciously externalize them, demonstrate them to students, and ask students to imitate, summarize and summarize them.

The so-called problem is a situation in which individuals cannot directly deal with it with their existing knowledge and experience, and therefore feel difficult.