Which teaching aid can add a greater level of authenticity and practicality to lessons in the classroom by adding sound?

Using audio recordings as a teaching aid enhances the authenticity and practicality of lessons by integrating sound into the learning experience. Sound can engage students more effectively, stimulating their auditory learning processes, and making the content more relatable and memorable. For instance, in a fire rescue training context, audio recordings of emergency scenarios, equipment in use, or even relevant interviews could exemplify real-life situations that students may encounter, providing them with a richer understanding of the subject matter.

In contrast, the other options, while useful, do not incorporate sound as an element. Textbooks primarily provide written information, which can be informative but lacks the dimension of auditory engagement. Marker boards serve as visual aids for conveying ideas and concepts, but they do not create sound or enhance the learning experience through auditory examples. Duplicated materials, such as handouts or worksheets, can reinforce learning but similarly do not provide sound or auditory context that can deepen understanding. Audio recordings, therefore, stand out as a powerful tool for creating an immersive learning environment.