The document discusses three generations of distance education pedagogy: 1) Behaviourist/Cognitive pedagogies focus on individual self-paced learning and direct instruction. 2) Constructivist pedagogies emphasize socially constructed knowledge through group learning and discussion. 3) Connectivist pedagogies focus on building networks of information through connecting nodes on the web to apply knowledge to real problems. The three generations are seen as building upon each other to develop 21st century skills through networked, lifelong learning.