Most past and current learning technologies have been one- or two-dimensional in presentation. This may be fine if one is looking at a map or even a fine painting. However, to fully appreciate the detail of a statue or a machine part, it is better to be able to look at it from all sides. Use of holographic images allows an item to be shared with a…

Reviews research findings on variables in computer screen displays and their effects on learning for use by purchasers or designers of computer systems for instructional purposes. Variables discussed include fatigue, density of displayed text, scrolling, upper-case vesus upper- and lower-case lettering, letter size, and graphics. Ten references…