In today's society, three meals a day are essential for people. However, people will die from food poisoning or even death just because there is something harmful to our health in the three meals a day.

Therefore, students must be instructed to learn some knowledge about food safety, so that they can understand the importance of safety and choose and identify when buying food. So as to establish safety awareness, stay away from potential safety hazards mentally, strengthen their own quality training, and make students grow up safely and healthily.

Teaching objective:

1. Through the introduction of food poisoning accident cases, let students realize the importance of food safety through discussion and other forms.

2. Through this class meeting, we can enhance food safety awareness, select and identify foods, and grow healthily.

teaching preparation:

ppt, prepare corresponding graphic materials.

Teaching process:

1. Inspiring talk

When swine flu virus is raging all over the world, how should we effectively contain germs and prevent the invasion of influenza virus in this flu-prone season? Experts believe that the transmission route of swine flu is similar to seasonal flu. Usually, the infected items are touched by hands and then enter the body through the nose and mouth. Therefore, we should enhance food safety awareness and prevent the disease from entering the mouth.

as the saying goes, food is the most important thing for the people. Three meals a day is essential to people's life. So, classmates, when you usually enjoy all kinds of children's food, do you think about safety? Today, we will talk about this topic about food safety in this class.

2. Enlightened

(1) Case analysis

1. On the afternoon of March 2th, 2xx, some students in three primary schools in Jixi City, Heping Primary School, Gardener Primary School and Teachers' Affiliated Primary School, developed symptoms of food poisoning due to eating lunch boxes provided by Honghu Nutrition to restaurants. After investigation, Honghu Nutrition sent to the restaurant to process cold dishes without authorization, and raw and cooked food utensils and tools were mixed, which caused the cold pine bean curd to be contaminated by Proteus during the processing, and the cold pine bean curd polluted other foods to varying degrees during the packaging and transportation, causing food poisoning.

2. On the morning of March 3th, 2xx, a child food poisoning incident occurred in Little Doctor Kindergarten on the right side of the gate of No.46 Factory of zhangwan district Dongfeng Company in Shiyan, Hubei Province. As of March 31st, 135 people had symptoms of poisoning, including 128 children and 7 faculty members, among whom 1 children had severe symptoms. The local health department diagnosed nitrite food poisoning.

a, student exchange

b, teacher's summary

c, students tell stories about food safety accidents in their lives.

report in groups: mainly in markets, supermarkets, shopping malls, restaurants and street stalls (the students talked about the following aspects:

① The tables of kebabs and sausages were dark and dirty, and the food was bitten by flies, and some were covered with dust.

(2) The machines for making marshmallows are all dirty, and from time to time, dirty things will fall in. The seller himself is also very dirty and doesn't pay attention to hygiene at all.

③ The bagged food has no clear origin and trademark, and some of them have passed the shelf life. Some hotels have extremely poor kitchen hygiene.

3. Understand the characteristics of food poisoning

1. All the poisoned people have eaten the same suspected poisoned food in a similar time.

2. The incubation period is short, the onset is sharp and the course of disease is short.

3. The common clinical manifestations of poisoned people are acute gastroenteritis, such as abdominal pain, diarrhea and vomiting.

Fourth, know the types of food poisoning

Food poisoning is mainly divided into bacterial food poisoning, plant and animal food poisoning and chemical food poisoning.

1. Bacterial food poisoning: meat, fish, eggs, milk, cold dishes, leftovers and other foods easily contaminated by bacteria and moldy food poisoning.

2. Plant and animal food poisoning: poisoning caused by poisonous animals such as puffer fish, shellfish and fish, and poisoning caused by poisonous plants such as poisonous mushrooms, beans, toadstools, plants containing cyanosides and free gossypol in cottonseed oil.

3. Chemical food poisoning: heavy metal, nitrite and pesticide poisoning. Vegetables and fruits contaminated by pesticides, seafood and shellfish contaminated by toxic algae, etc.

V. How to strengthen food safety awareness in daily life

It seems that food safety has become a major issue affecting human health and international people's livelihood. Our country also attaches great importance to it and has taken some measures. Please have a look. (Show students pictures and explain them, and you can also show corresponding policies), so what should we pay attention to in food safety?

1. Develop good hygiene habits. Wash your hands before and after meals to prevent illness from entering your mouth. For example, if the hands are stained with pathogenic bacteria, and then the food is taken, the contaminated food will enter the digestive tract, which will lead to bacterial food poisoning.

2. Don't buy food from vendors without hygiene license.

3. Choose fresh and safe food. When buying food, you should pay attention to check whether there is corruption or deterioration. To view its production date and shelf life. Can't buy expired food and products without factory name and address.

4, food should be thoroughly cleaned before eating. Wash raw fruits and vegetables. Fruits and vegetables will not only be infected with germs, viruses, parasitic eggs, but also residual pesticides and pesticides, etc. If they are not cleaned, they may not only be infected with diseases, but also cause pesticide poisoning. Bean and soybean milk contain saponins and other toxins, which will cause poisoning if they are not heated thoroughly.

5. Try not to eat leftovers. If you want to eat, you should heat it thoroughly. Leftover meals, leftover desserts, milk, etc. are all good media for bacteria, and incomplete heating will cause bacterial food poisoning.

6. Don't eat moldy grain, sugarcane and peanuts (with mildew spots on the grains), and the mycotoxins in them will cause poisoning.

7. Be alert to poisoning caused by eating toxic and harmful substances by mistake. Containers containing disinfectants, pesticides or rodenticides must be properly disposed of after use to prevent poisoning caused by drinking water or misuse.

8. Drink drinking water that meets the hygiene requirements. Do not drink raw water or unclean water. It is best to drink boiled water.

9, advocate physical exercise, enhance the body's immunity and resist the invasion of bacteria.

6. What if you really feel unwell?

1. Stop eating suspicious food immediately.

2. Drink water. Drink plenty of clean water immediately to dilute the toxin.

3. induce vomiting. Press your fingers against your throat and spit out the food in your stomach as much as possible.

4. Keep vomit or feces in plastic bags and send them to the hospital for examination, so as to facilitate diagnosis.

5. In case of dehydration symptoms (such as wrinkled skin, increased heart rate, etc.), the patient with national poisoning should be sent to a nearby hospital for treatment as soon as possible.

VII. Teacher's Summary

Teacher: Students, through the study of this lesson, we all know that eating unhealthy food will affect our health. The students also expressed their determination not to buy snacks indiscriminately in the future.

Through discussion, we know how to buy safe food and practice how to wash our hands. I hope every student can form a good habit of speaking hygiene, which will make our bodies healthier and our brains smarter.

The whole class recited the Diet Song together.

Salt vinegar is good for anti-virus and anti-inflammation, and leek tonifies the kidney and warms the knee and waist.

Radish can reduce phlegm and flatulence, while celery can lower blood pressure.

Pepper can remove cold and dampness, and scallion and ginger soup can cure colds.

Garlic inhibits gastroenteritis, and mung bean is the best for relieving summer heat.

Pears moisten the lungs and resolve phlegm, strengthen the stomach and kidney and eat red dates.

tomatoes enrich the blood and beautify the face, and eggs are nutritious.

Peanut can lower cholesterol, while melon and bean can reduce swelling and induce diuresis.

Fish and shrimp can replenish milk and improve the eyesight of animal liver.

promoting fluid production and calming the nerves, counting dark plums, moistening the lungs and blackening the hair and eating walnuts.

honey moistens the lungs and resolves phlegm, but grapes are pleasing to the eye.

Bananas relieve constipation and relieve stomach fire, while apples have high antidiarrheal nutrition.

Kelp contains both calcium and iodine, and mushrooms inhibit cancer cells.

Chinese cabbage is diuretic and detoxifies, and cauliflower often eats less cancer.