International sign language refers to a way of communicating using gestures and visual cues that are recognized around the world. Think of it like a secret code that people who speak different languages can use to understand each other.
So imagine you're visiting another country where they didn't speak your language. Instead of trying to learn their language, you could use international sign language to communicate. For example, you could use gestures like pointing to your mouth to indicate you're hungry or rubbing your stomach to show you want food.
International sign language is used by people who are deaf or hard of hearing, but it can also be useful for anyone who wants to communicate with people who speak different languages. By using simple, universal gestures, international sign language makes it possible for people from different cultures and backgrounds to understand each other.