Facing the audience:
Hello dear viewers, little boys and girls ! Here we are for an exciting quiz program. The subject of our quiz will be "Sound". We are going first watch an interesting video on "Sound". Then we will commence the quiz.
(turning to the participants) I see that all the participants are all ready and bouncing with energy and enthusiasm. (turning to the audience) Let's get their introductions. (Turning to the participants) could you please tell us your name, class, school and town please.