How do you add interest to your speech? Visual aids and powerpoint slides etc can add interest to a speech when used to support a speech and not in place of it.
However, perhaps the strongest spring of interest any audience can sense or observe comes from within the speaker himself. This spring is the deep personal interest a speaker has in his subject.
A speaker trying to talk about a subject in which, he is not interested is like a boy trying to make love to a girl he despises. Yet every day people try to speak on subjects as foreign to their interests as a rat in China.
For example, a girl from Egypt, at the University of Illinois in 1947, was assigned the task of making a five minute speech on Socialized Medicine.
This assignment was indeed a gruesome task for her. be¬cause, although socialized medicine was a rather popular subject at that time, this young Egyptian cared no more about medicine than an Arctic snowball. She almost would have preferred flying back to Egypt than trying to speak about medicine. She was nerv¬ous, worried, and went to see if the professor would let her talk about some other subject. In a conversation with another teacher her eyes sparkled as she talked about young people in Egypt and about the Pyramids which she had visited. What an excellent talk she could have made on either of those subjects!
On the other hand, perhaps some medical student who felt socialized medicine might soon pinch his pocketbook, could make a spirited talk on that subject.
Expecting a person to speak effectively upon a subject about which he has little knowledge and no interest is about as sensible as inviting a legless man to enter a dancing contest.
Getting extensive knowledge about any subject will usually stimulate interest for that subject, but there must be some basic interest at the start. Otherwise the person simply will not be enthusiastic enough to get the knowledge. And his boredom with the subject will be clearly evident when he tries to speak on it. Anyway a manufactured interest is rarely as dynamic or convinc¬ing as one that springs from a spirit incited by a natural liking for the subject.
So when choosing a subject a speaker should select one that fascinates him. If he is not interested in anything why should he speak at all? Without interest he really has nothing to share. And effective speaking is a two-way sharing process.
When you are interested in the topic and know it thoroughly it can make it easier to speak about to an audience. The audience will also respond to your interest in the topic in a positive way.