This document discusses the implications of new technologies and eLearning 2.0 for teachers. It notes that knowledge is constantly changing and constructed collaboratively online. Key 21st century skills include collaboration, digital literacy, and problem solving. Research shows that Web 2.0 tools can support effective learning when teachers plan engaging activities, encourage reflection and collaboration, and act as moderators rather than instructors. Success depends on preparation, clear goals, and allowing students to direct their own learning.