Health activities: Where's the food in your mouth?

Educational goal: 1. Let the children know the names of various organs in the digestive system of the human body, and let the children know that part of the food they eat is absorbed by the human body, and part of the residue is excluded from the body after passing through the digestive organs. 2. Educate children to pay attention to food hygiene. Activity preparation: a wall chart or model of human digestive system. Activity flow: 1, understanding the digestive system. (1) problem import. Inspire children to answer: rice, fruits, vegetables, etc. The teacher asked again: where did all these things go after eating? Please look at the chart below. (2) Show the wall chart of human digestive system and know the names of various organs. Introduce the names of digestive organs in the pictures to children: mouth (teeth, tongue, saliva), esophagus, stomach, intestine, etc. Tell children that after passing through these organs, some things eaten in the mouth are absorbed by the human body and some are excluded from the body. 2. Understand the process of food digestion. The teacher made up a story: A Journey of Bread. By telling stories, let children know the following process: the bread is eaten by children, chewed and ground with teeth, turned into small pieces, stirred with tongue, swallowed with saliva, so that the bread is wet, soaked and swallowed, and passes through the esophagus like a tube and sent to the stomach like a pocket. The stomach is constantly working, and there is digestive juice in the stomach, which digests the bread worse and thinner, like paste, and then sends it to the winding small intestine. The small intestine is also constantly working, absorbing nutrients from bread and sending them to all parts of the body. These nutrients make children grow up, grow tall, be healthy and use their brains. The remaining undigested things are sent to the large intestine and turned into feces through the anus to be excreted. 3, food hygiene education through conversation, educate children to pay attention to hygiene when eating, to do: 1, don't talk when eating, don't look around. 2, eat regularly and quantitatively, eat less snacks and indigestible things. Wash your hands before eating, wash raw fruits and vegetables, and don't do strenuous activities before and after meals.