The digestive system for kids starts in the mouth. When you eat, your teeth chew the food into small pieces. This is like the first step in breaking it down. Then saliva, which is in your mouth, helps make the food mushy so it can go down the esophagus easily. The esophagus is like a tube that takes the food to the stomach. In the stomach, there are strong acids that break the food even more. After that, the food goes into the small intestine where nutrients are absorbed into the body. Finally, the waste goes out through the large intestine and then out of the body.
In a kids' story about the digestive system, here's how it goes. First off, when a kid eats something, say an apple, the teeth start chomping. This is important as it makes the apple into small bits. Saliva then coats these bits, which is really cool as it helps in swallowing. The food then travels down the esophagus. The stomach is where things get really interesting. It has juices that are acidic and they break the food down into a soupy mixture. The small intestine is like a long, winding road where the useful parts of the food, like proteins and carbohydrates, are absorbed. The large intestine is the last stop for the waste, and from there, it exits the body.