The document discusses constructivism in online teaching and learning. It describes constructivism as a theory where knowledge is constructed by learners based on their own experiences rather than being taught by teachers. Under the constructivist model, learners are active participants in the learning process and focus on discovery with the teacher facilitating. Key aspects of constructivism discussed include collaborative learning, socio-cultural influences on learning, and the teacher taking the role of facilitator to guide students' understanding.