Constructivism: What It Is in Learning, From Piaget to Vygotsky

What Constructivism Is

Treccani’s entry on learning puts it plainly: under constructivism, “the child always plays an active part in building their own knowledge.” A learner does not receive content ready-made; they work it over and rebuild it inside their own existing schemas. That is a real break from the idea of teaching as simple transmission — the same lesson, heard by two students, produces two different mental constructions, because each student starts from a different set of schemas.

The word also has a broader, philosophical origin. Treccani traces constructivism, in its most radical epistemological form, back to a strand of thought that took hold starting in the mid-1970s, with ties to Jean Piaget’s genetic epistemology among other influences. Inside learning theory, though, the field mostly runs along two intertwined paths: Jean Piaget’s individual account and Lev Vygotsky’s social one, with Jerome Bruner’s contribution added later.

Piaget: The Individual Construction of Knowledge

Jean Piaget was born in Neuchâtel, Switzerland, in 1896, and died in 1980. In his account, mental development comes from two complementary mechanisms: assimilation and accommodation. Through assimilation, a child folds new information into action schemas they already possess; through accommodation, a schema itself changes shape so it can still be applied once reality no longer fits the old version.

This back-and-forth marks out four developmental stages with specific age ranges: sensorimotor from birth to age 2, preoperational from 2 to 7, concrete operational from 7 to 12, and finally formal operational. Treccani’s entry on learning frames the underlying shift in similar terms: knowledge changes “as a result of problems and information that cannot be fitted into existing cognitive schemas,” and the stages themselves mark the appearance of new mental structures the child builds along the way. The sensorimotor stage, covering the first two years of life, overlaps with the window our Recap on the first 1000 days of life describes as critical for development.

Vygotsky: Social Constructivism and the Zone of Proximal Development

Lev Semënovič Vygotsky was born in Orsha in 1896 and died in Moscow in 1934. Where Piaget started from a lone child acting on the world, Vygotsky moved the origin of knowledge into social exchange. In Treccani’s account, Vygotsky held that mental processes rest on the use of signs — language chief among them — that have a socio-cultural origin; the symbolic systems a child picks up let them communicate with other people, absorb the values of their surrounding culture, and regulate their own behavior, through an ongoing process of internalization that unfolds inside the family and social environment.

Treccani’s entry on learning sums up this shift as “the gradual passage from the social to the individual, from interpersonal functioning to intrapsychological functioning”: cultural transmission and systematic teaching, the same source notes, come before development rather than simply trailing behind it. This is also where Vygotsky’s best-known idea comes from, the zone of proximal development, defined as the distance between what a child can do alone and what the same child can understand or solve with an adult’s help. The way a child learns to read their own reactions during exchanges with others is another piece of this social construction: our Recap on human emotions covers how those mechanisms work.

A source independent of the encyclopedic ones, the GSI teaching center at the University of California, Berkeley, frames social constructivism as “a variety of cognitive constructivism that emphasizes the collaborative nature of much learning.” The same source notes that Vygotsky, while a cognitivist like Piaget, rejected the idea that learning could be separated from the social context in which it happens: in this reading, knowledge is not simply constructed, it is co-constructed.

Bruner: Discovery Learning and Scaffolding

Working in the same constructivist tradition, Treccani’s entry on learning describes Jerome Bruner’s contribution around two ideas: a child’s discovery of strategies, rules, representations, and concepts, and scaffolding — temporary structure an adult builds to guide a less capable learner toward a solution. The scaffolding does not solve the problem for the child; it supports them until they can manage alone, and then it comes away.

Putting this into practice in a classroom does not require special equipment. The same source describes techniques built specifically to train reading-comprehension skills.

Practical example: in a classroom using reciprocal teaching, the teacher and students take turns leading the lesson — each one asks questions, summarizes a passage, or tries to predict what comes next, while the rest of the group helps them along. It is one of the modeling and coaching procedures Treccani’s entry on learning describes for strategic reading skills: the adult’s job is not to supply the answer but to support reasoning the student is still learning to do alone. Anyone curious about why some review techniques work better than others can also read our Recap on how to study effectively, which starts from the same idea of actively constructed knowledge.

Constructivism and Social Constructivism in the Classroom

The two perspectives overlap more often than it might seem. A quick comparison:

UC Berkeley’s GSI center also puts a number on group work: the ideal size is four or five people, and peer collaboration works best as a process the teacher actively structures and mediates, not one left to run on its own. It is a practical recommendation, and it fits the broader idea that knowledge moves better when it passes between people instead of staying locked inside one head.