A paragraph is like a little house for words. Just like a house has walls to keep things together, a paragraph has sentences that stay together to talk about one idea. When you read a book, the words need to live somewhere, and that somewhere is a paragraph. Think of it like a cozy room where all the sentences are friends and they all want to tell you the same story.
Imagine a train with many cars. Each car is a paragraph, and each one carries something special. The train moves smoothly because each car is connected and follows the other. In a story, paragraphs help the story move smoothly from one idea to the next, just like a train keeps going down the track.
Think of a garden with different flowers. Each type of flower is like a paragraph. All the flowers together make the garden beautiful, just like paragraphs make a story interesting. Each paragraph is a different flower, but they all grow together to make something wonderful.
So, a paragraph is a special place where sentences live together to share an idea, just like friends sharing a secret in their own little clubhouse.