What type of aid would a digital presentation using slides be classified as?

A digital presentation using slides is classified as a projected aid because it involves projecting visual information onto a screen for an audience to view. This form of aid enhances understanding and engagement by allowing the audience to see content, such as text, images, and graphs, in a larger format. Projected aids create a shared experience, making it easier for an instructor to convey complex ideas visually, and they are often used in conjunction with verbal explanations to reinforce learning.

Other types of aids, such as illustration boards, handouts, and models, serve different purposes. Illustration boards are typically static images or displays that are physically shown to an audience without projection technology. Handouts are printed materials distributed to participants for reference but do not involve a display mechanism like projection. Models are three-dimensional representations of objects used for demonstration and do not involve digital projection at all. Thus, the characteristics of a digital presentation align most closely with those of projected aids.