Which of the following is considered a nonprojected teaching aid?

A nonprojected teaching aid is defined as any instructional material that does not require a projection device to convey information to the audience. Audio recordings fit this definition perfectly, as they are solely auditory in nature and can be used independently of visual aids. This allows instructors to engage students through sound, providing information, storytelling, or recorded discussions without the need for screens or projectors.

In contrast, video presentations, overhead projectors, and computer-generated slides all rely on visual projection to deliver content. These aids require equipment such as projectors or screens to be effective, focusing on visual elements that complement an instructor's verbal delivery. Thus, due to their reliance on projection technology, they do not classify as nonprojected teaching aids.