The document outlines the timeline of education from prehistoric times to the 21st century. It discusses the major periods of education including primitive times, ancient civilizations, the medieval period, Renaissance period, and from Renaissance to the 21st century. For each period, it describes the prominent educational proponents and concepts as well as the common teaching-learning methodologies. Overall, the timeline shows how educational approaches have evolved from demonstration and imitation in prehistoric times to becoming more learner-centered, research-based, and technology-driven over the centuries.