Radical constructivists emphasize the construction of a coherent experiential reality.
Social constructivists emphasize the construction of an agreed-upon, socially constructed reality. Constructivist pedagogy, the link between theory and practice, suffers from the breadth of its theoretical underpinnings. Many theorists and practitioners have generated constructivist pedagogies with an array of results. While these pedagogies share a set of core design principles, the peripheral principles tend to vary greatly. The general theoretical and practical constructivist consensus, however, across all three types of constructivism, indicates that eight factors are essential in constructivist pedagogy.