Health Classroom: How Food Spread in Human Body

2. Educate children to form the habit of speaking hygiene from an early age. 3. Stimulate children's interest in understanding the mysteries of the human body. Activity preparation: multimedia courseware, food and operation materials are distributed to everyone. Activity flow: 1. Stimulate the interest in inquiry: Teacher: We have to eat every day, so where is the food we eat? How does food travel in the human body and where does it go? Question: Where did the food go first, then, and finally? Second, through the partial demonstration of courseware, we can further understand the process of food travel, preliminarily understand the functions of mouth, esophagus, stomach, small intestine and large intestine, and improve children's self-protection consciousness: 1. Where is the first stop of the gourmet tour? How does food change in our mouth? How did it happen? Guide children to observe each other's feelings while eating food. The role of teeth is really great. How should we protect them? 3. After the food passed through the mouth, where did it go and through what did it reach the stomach? Guide children to feel the function of esophagus and its position in the human body during drinking water. What happens to food in the stomach? How did it happen? Summary: The stomach is like a pocket. Stomach peristalsis is to grind the food in the pocket finer and worse, which is convenient for human digestion. Think about it, children. What will happen if there is too much food in this pocket? Have you ever had an upset stomach before? What should we pay attention to in life? How to protect our stomachs? Summary: Don't eat too hot food, eat regularly and quantitatively, don't do strenuous exercise before and after meals, have a variety of foods, and don't eat too many cold drinks and snacks. 6. Just now, the food passed through the mouth, esophagus and stomach. It is going to travel again. What's the next stop? Summary: The small intestine is like a processing factory, absorbing all the nutrients of food. 7. Where will the food eventually flow? (Guide children to understand the role of the large intestine) Summary: Food waste enters the large intestine and is finally discharged from the human body. Third, application exercises: judge where food travels, further understand the role of mouth, stomach and small intestine, organize pictures through children's operations, and review and consolidate the process of food travel. Fourth, expansion: inspire children to love science, and the desire to explore science when they grow up is in our bodies. Besides food travel, there are many secrets. As long as you study your skills carefully, you will certainly explore more human secrets when you grow up. Reflection: The content selected in this activity is close to children's life and is welcomed by children. The first part of the activity vividly expresses the course of food travel through what a cake that has not been chewed up sees and hears when traveling in the body, and makes the children be very involved and unconsciously accept it through animation. In the second and third parts, children can learn more about the sequence of food travel and the functions of various digestive organs by sorting out the digestive charts by hand, and find out the problems that should be paid attention to when eating through careful observation of the pictures. The fourth part of the activity is intended to let children know the function and function of the digestive system, and let children pay attention to their usual life hygiene and eating habits. This part of the content plays a role in consolidating and extending. In order to make children's knowledge into their daily behaviors and form habits, I designed an expansion activity-playing healthy behavior chess. The whole activity adopted various forms, which realized the alternation of static and dynamic, fully mobilized the children's various senses, and the children's initiative was strong, which also reflected the leading role of teachers, making the information conveyed to the children by the activity very scientific and interesting. "Science Curriculum Standard" points out that scientific learning should focus on inquiry. Inquiry is not only the goal of scientific learning, but also the way of scientific learning. Letting children experience inquiry learning activities is the main way for children to learn science. In order to better let children know the digestive path of digestive organs and food in the human body, in the past, teaching was organized with imparting knowledge as the center, and the realization of teaching objectives would become rote learning, which was not conducive to lifelong learning. The new curriculum requires children's hands-on experience, advocates children's active participation in learning methods, and guides children to explore science through experience. The digestion process of food in the human body and the functions of various digestive organs will be very boring if we simply use language. With concrete pictures, the content is more substantial and the image is more vivid, which can directly stimulate children's visual and auditory senses and deepen the experience. In short, children's learning of scientific knowledge is a process of acceptance, as well as a process of discovery and creation. Therefore, in science teaching, the best way is to guide children to discover, explore and experience their unique experiences.