Abstract: A process for computer-assisted teaching, which is also known as computer-aided-instruction and computer-based-training is disclosed. Computer simulation may be used to present images which depict an actual physical system that is operated by user actions on a physical control panel. The process is particularly adaptable for teaching persons how to use and maintain various types of industrial machines, teaching students various scientific phenomena and processes, teaching office workers how to use computers and various other office machines, and teaching homeowners how to use various consumer products.