Your slide show is just a visual aid.
A visual aid locating the district might be helpful, though we can't assume we'll have an overhead by then.
A couple of days before our speeches were due, I had the bright idea of going to the local branch of the Humane Society and borrowing a puppy to use as a sort of a visual aid.
Complement your speech with visual aids.
The manufacture and development of new visual aids will further improve visual rehabilitation.
Code for construction and acceptance of civil airport visual aids
