There is a gap between current technology and the methods used to present this technology in industrial arts classes. Increasing technical knowledge, obsolete and expensive equipment cause this gap to increase. Teachers in industrial arts are striving to present a realistic picture of function and use of industrial products. Keeping up with industry is difficult. The expense of teaching aids is high, and often these aids mislead the observer by showing a function of a process in still or slow motion. The speeds that mechanical devices attain today are beyond the realm of many students' thoughts.
