In a book, the writer can tell you what’s going on without a word being spoken by a character.
In a play, especially one for kids, the dialogue does this work. It has to explain what’s happening, how people are feeling, and why things are the way they are. A large part of plays is people arguing with each other, trying to persuade each other, resisting being persuaded... but it is mostly in dialogue with conflict.
Have a look at the example for some BIG heartfelt conflict that explains what’s happening as it goes.
