Answer:
When presenting to younger children, I would use words that are at their level, make what I'm saying sound fun, using humour that they understand, and use many visuals. I would use more expression in my voice, and I would make what I'm saying relevant to the kids, and not as serious as it would be in a presentation to older individuals - I might even include one of the children in a demonstration of sorts, or do something that will surely stick in their minds after I'm done.
Step-by-step explanation:
Younger children (depending on their age, of course) generally tend to want to have more fun than work and do things that they see as 'less fun' or 'boring', so the more vivid you make the presentation, the more you speak clearly, the more you entertain them, the more likely they are to listen and want to participate in the activity or group that you will later propose.