Six Principles of Effective e-Learning: What Works and Why by Ruth  Clark : Learning Solutions Magazine | Educational |

"For the past ten years, Richard Mayer and his colleagues at the University of California at Santa Barbara have conducted a series of controlled experiments on how to best use audio, text, and graphics to optimize learning in multimedia. Six media element principles can be defined based on Mayer’s work. What follows is a summary of these principles along with supporting examples, psychological rationale, and research."

Via Dennis T OConnor