Digestion for Kids: Teeth, Stomach and the Journey of Your Lunch (Grade 4 and Grade 5 Science)

Hi, I'm Luna from DoodleBeez. Today we are following your lunch on an amazing journey through your body. This journey is called digestion. It breaks food into tiny pieces your body can use.

Digestion starts in your mouth. Your teeth have different jobs. Sharp front incisors cut and bite. Pointy canines tear. Wide, flat molars at the back grind food into a mushy paste.

While you chew, saliva makes the food wet and soft. Saliva also starts to break down starchy foods like bread. Your tongue rolls the food into a ball, and you swallow it.

The food slides down a muscle tube called the esophagus into your stomach. The stomach squeezes and churns. It mixes the food with strong acid and juices, turning it into a thick soupy liquid.

Next comes the small intestine. It is narrow but very long, coiled up inside your belly. Here food is broken down even more, and nutrients pass through its walls into your blood.

What is left moves into the large intestine. It is wider and shorter. The large intestine soaks up water from the leftovers. The waste that is left over leaves your body when you use the toilet.

Now it's your turn. Put these in order. Stomach, mouth, small intestine, esophagus. Which comes first, and which comes last? Pause and try. Mouth, then esophagus, then stomach, then small intestine.

Great job! Remember, teeth and saliva start digestion, the stomach churns, the small intestine takes in nutrients, and the large intestine soaks up water. Practice digestion in the Science Lab at doodlebeez.com. See you next time!