1. Understand what nutrients people need and their sources, and understand the importance of comprehensive and reasonable nutrition.

2. Learn to classify familiar foods around you and cultivate the ability of classification. Be able to use simple charts to make statistics, and exercise students' ability to preliminarily sort out data and evaluate results.

3. Cultivate scientific eating habits. Stimulate students' interest in caring about food and enhance their health awareness.

Key and difficult points: Through the process of collecting information, students can understand the different nutrition of various foods and describe them in their own language.

Third, preparation before class:

Fourth, the teaching process:

First of all, create a situation and lead to a topic.

Teacher: Show me the picture of Liu Xiang weightlifting champion Zhan Xugang. Do the students know him?

Health: Liu Xiang.

By the way, what about the second place? He is also an Olympic champion in China. He is the weightlifting champion Zhan Xugang. I mentioned that their teacher is also a weightlifting champion Zhan Xugang. I mentioned that their teacher is as proud as you. They can become Olympic champions and win glory for their motherland not only because of their hard training, but also because of their scientific diet. In this class, we will learn about diet and health together. (blackboard writing topic)

2. Exploration of nutrition knowledge.

Teacher: Next, let's do a small survey. Please think about it. What did you eat yesterday?

Health: I drank milk in the morning and ate eggs and noodles at noon.

Health: rice, fish.

Health: My staple foods are steamed bread, celery and soup.

Teacher: We eat a lot of food every day, so what do you like best among these foods? what do you dislike most？

Health: I love fruit.

Health: I prefer fish and meat to vegetables.

Health: I like good food, but I don't like bad food.

Teacher: If you only eat what you like and don't eat what you don't like, what serious consequences will this lead to?

Health: malnutrition.

Teacher: Yes. This diet is unscientific. Because all kinds of foods contain a variety of nutrients that our human body needs, the teacher told us that nutrients are substances that play an important role in our health. Just as the growth of young trees needs to absorb nutrients from the soil, we also need to get all kinds of nutrients from food. Then tell your friends what nutrition you are looking for in the group now.

Student: (group communication).

Student: (Reporting) (This article is reproduced from Fan Wenla. Com -www.fw55555.com Please keep this mark)

Health: Vegetables contain a lot of vitamins. (Courseware with demonstration)

Health: All kinds of coarse grains are rich in carbohydrates, which can be supplied to human body.

A large amount of heat energy, plant protein and cellulose, with low fat content, are the economic sources of heat production.

Health: Vegetables and fruits are the main sources of vitamin C, carotene, vitamin B2, calcium and iron.

Health: Milk contains essential nutrients, rich in protein and easily absorbed calcium, as well as easily absorbed fat, inorganic salts and various vitamins, especially vitamin A and vitamin B.

Health: Sugar can provide us with heat energy.

Health: Oily food contains fat, which provides us with heat and strength, but we should not eat too much.

Health: Fish, meat, eggs, milk and soybeans provide protein for our growth and development.

Health: protein, fat, sugar, organic salt, vitamins, crude fiber and water are the seven essential nutrients for human body.

Teacher: Because of the time, there are many students' information, which everyone has exchanged in the group.

Teacher: The students really know a lot. After listening to everyone's report, the teacher found that you have really become a little nutritionist now. So how do some picky students feel after listening to the students' reports?

Health: not picky about food.

Health: Eat more vegetables.

Teacher: Good students use the power of knowledge to help picky eaters understand nutrition.

The importance of balance. Eat all kinds of food, eat nutritious food.

Teacher: Diet and nutrition are very important, so how many meals should we eat every day?

Health: Three meals.

Teacher: Why do we have to eat three meals? This is because the food we eat every day must first be stored in the stomach. Do you know where your belly is? Touch it, and your stomach will digest the food after 3 or 4 hours. At this time, your stomach will be empty, and you will have no energy to study. Therefore, we should eat on time every morning, noon and evening to replenish energy. Breakfast is especially important among the three meals. Please raise your hand if you can insist on breakfast. Why is it important to eat breakfast every day? First of all, after a night of digestion every night, the nutrition of food has disappeared a lot, just like a battery can't work without energy. Secondly, we have a lot of study and activities every morning, which is the most exhausting time, so breakfast is very important.

Teacher: Besides eating on time, we should also pay attention to the right amount of each meal, neither too much nor too little. What can be adhered to above is scientific diet.

Third, eating hygiene habits.

Teacher: Just now, the teacher and his classmates studied the problem of scientific diet together. Therefore, while paying attention to science, we should also pay attention to hygiene in diet. How to talk about hygiene at ordinary times?

Health: Don't eat contaminated and spoiled food.

Health: Wash your hands before eating, and wash your food before eating.

Fourth, summary.

Teacher: Show me a picture of five colors and five foods. Is it beautiful? The nutrition they contain will make you healthy. Is that really beautiful?

Teacher: I hope students should not only eat scientifically, but also pay attention to exercise. With a healthy body, we can become useful talents to the society and win glory for our motherland like Olympic champions. -Model paper.