Constructivism is a theory of learning that says people construct their own understanding and knowledge through experiences and reflecting on those experiences. According to constructivism, learning happens best when people are actively involved in real experiences. Two founders of constructivism were Jean Piaget and Lev Vygotsky. Piaget believed children learn through schemas or organized patterns of thought and behavior developed from their experiences. Vygotsky felt social interaction and collaborative learning were important parts of constructing knowledge.