The psychologist who put forward the theory of the zone of proximal development is Vygotsky.

Leo Vygotsky, a Soviet psychologist, is also known as Vygotsky, Vygotsky, Vygotsky, Vygotsky, Vygotsky, and Chinese mainland usually translates it into Vygotsky. Vygotsky believes that social environment plays a key role in learning, and the integration of social factors and personal factors promotes learning.

He and Piaget developed a set of cognitive development theory system respectively. Unfortunately, he died of pneumonia at the age of 37, when only Russian works were left. Because his political views are different from Stalin's, and because his theory has a strong western cultural color, he was suppressed by the Soviet government authorities from 1936 to 1956, and it was forbidden to discuss his theory.

It was not until the 1960s that his theory was widely known in the West and was quickly translated into various languages. His students also took this opportunity to give lectures in the United States and publicize his thoughts, which had a wide influence on western psychology. Vygotsky, A Leontev and A Ruglia formed an influential school of cultural and historical psychology.

Vygotsky's theory can be summarized as follows:

1. People are social entities from birth and the product of social history.

2. The means for people to meet various needs are mastered through continuous learning the day after tomorrow.

3. Education and teaching is the form of people's psychological development.

4. People's psychological development is carried out in the process of mastering the means and ways to meet people's needs.

5. The communication between people is initially manifested as an external form, and later internalized as an internal psychological form.