Fair dealing is like sharing toys being fair with friends. When you share your toys, you let your friends play with them. But you also want to make sure that your friends don't break them or keep them for too long. Fair dealing works the same way, but instead of toys, it's about sharing things like music, books, or movies.
When someone makes a movie or writes a book, they own something called "copyright," which means they are the only ones allowed to make copies of that movie or book. But sometimes, it's okay for other people to copy parts of it. That's where fair dealing comes in.
Fair dealing means that if you want to use part of a movie or book, it's okay as long as you're not taking too much and you're using it for certain reasons. For example, say you want to talk about a book in a school report. You can use some parts of the book to explain what you're talking about, but you can't copy the entire book and say it's your own.
So, fair dealing is like sharing toys but with things like books and music. You can use some parts of them, but you have to be careful, and you can't take too much or pretend it's your own.