Final answer:
Visual aids during a lesson are used to reinforce auditory information and enhance the understanding and retention of the content. They should support, not replace, verbal communication and be accessible to all students.
Step-by-step explanation:
The role of a visual aid during a lesson is to enhance understanding and retention of the material being taught. Using visual aids can reinforce auditory information by providing a visual representation of concepts that may be complex or difficult to grasp through words alone. Visual aids should be clear, directly related to the lesson content, and used to support rather than replace verbal communication. They can include charts, graphs, photographs, and other multimedia components designed to supplement a presentation or report. It is also important to consider the accessibility of visual aids to ensure that they cater to the needs of all students, including those with auditory or visual limitations.