Okay, little buddy! Let’s talk about trains! Imagine a really long toy that moves on special tracks, which we call rails.
Trains have round metal wheels that fit perfectly on these rails. When the train moves, the wheels roll on the rails — just like how your toy cars roll on the floor!
Now, there’s something special in the front of the train called the engine. Think of the engine like a big, strong friend that pulls the rest of the train along.
Behind the engine, there are carriages. These are the parts where people sit or where things can be carried. They are all connected together, kind of like how train cars are hooked up in a line!
So, when the engine pulls, it helps all the carriages move together down the tracks! Isn’t that cool?