The document discusses the key tenets of constructivism, which is based on the idea that learning occurs as learners construct meaning based on their own experiences. It outlines five principles of constructivism and discusses several major theorists who contributed to the development of constructivist theory, including Piaget, Bruner, Vygotsky, and Dewey. It also provides examples of classroom implications, such as teachers taking students' perspectives, encouraging questioning and collaboration among students, and using scaffolding techniques.