Time it doth changeth
His number 2 is: Blackboard Technique. I know that seldom are blackboards or whiteboards or other-color boards used anymore. Powerpoint is all. Much of my perspective on powerpoint follows Edward Tufte: (follow the link for the amusing captions, though my favorite is still “there is no bullet list like Stalin’s bullet list).
Our images are without question better for graphics programs and ppt. I still think that the process of writing with the class or audience (when done correctly, meeting people’s eyes and all that) is powerful.