Final answer:
When using visual aids in a speech, it's recommended to practice with them during rehearsal and consider accessibility for all audience members. The visual aids should be clear, sizeable, and used selectively to support your message.
Step-by-step explanation:
According to your textbook, when using visual aids in a speech, one of the best practices is to practice with the visual aid when you rehearse your speech. This preparation will help ensure that the visuals are integrated smoothly into your presentation and that you are comfortable using them.
Furthermore, by considering accessibility, you make your speech inclusive for all audience members, including those who may rely on interpreters or who have visual impairments. However, it's not always advised to draw directly on the chalkboard, as it might be less professional and harder to keep clear and visible for the audience. Nor is it necessary to keep the visual aid on display throughout the entire speech, as it can distract the audience from your verbal message.
Instead, use visual aids selectively to emphasize key points and remove them once they've served their purpose. To ensure effectiveness, make sure that your visuals are large enough for the audience to see, clear, concise, and of high quality. Poor quality visuals can frustrate the audience and detract from your message.