The document discusses constructivism and social development theory in education. It outlines key theorists like Piaget, Bruner, Vygotsky, and Dewey who contributed to constructivist learning. According to constructivism, learning occurs as students actively construct knowledge based on their experiences. Social development theory also emphasizes that social interaction and collaboration are important for cognitive development. The document explains that constructivist teachers facilitate learning by encouraging students to build on prior knowledge through hands-on activities and technology, while guiding students to develop their own understandings.