Connectivism, introduced in 2005 by George Siemens and Stephen Downes, emphasizes the role of technology in learning and views learners as 'nodes' in a network that connects various information sources. It underlines that knowledge rests in the diversity of opinions, and that learning is a continuous process of making connections and managing them. Implementation in classrooms involves shifting responsibilities from teachers to learners, utilizing technology, and promoting collaborative, individualized learning experiences.