In children's literature, a speech bubble is a visual representation used to convey what characters are saying or thinking. Typically shaped like an oval or a cloud with a pointed tail that connects to the speaking character, these bubbles enhance storytelling by providing immediate context and emotion. They are particularly effective in engaging young readers, as the dialogue can help illustrate character personalities and relationships, making the narrative more accessible and exciting. Speech bubbles often come in various styles and sizes, reflecting different voices and tones within the story.