A picture can say a million words. Illustrating the various ways to draw perspective can be vastly more effective with the use of video. In Introduction to Studio Art, we use mash-ups (web 2.0 web application hybrid), to create an interactive video tutorial that illustrates 1, 2 and 4 point perspective. Tutorials like these augment the instructions and assignments.
Using the tools in the mashup you can enlarge areas, use the fullscreen option, stop video play, or enlarge the small video screen. The slider-bar, located below the mashup, or the side tabs, allow easy access to other tutorials.