Activity objectives:

1, knowledge goal: let children know what junk food, "three no foods" and rotten food are, and know that eating these foods will endanger their health.

2. Ability goal: Through a variety of sensory activities such as seeing, touching and smelling, children can initially master the specific methods to distinguish junk food, "three no foods" and rotten food.

3. Emotional goal: enhance children's self-awareness of safe food, reject junk food, "three no foods" and rotten food, and improve children's self-protection ability.

Third, the activity is heavy and difficult:

Key points: let children know what junk food, "three no foods" and rotten food are, and know the health hazards of these three foods.

Difficulties: let children master the specific methods to distinguish junk food, "three no foods" and rotten food.

Fourth, activity preparation:

1. Experience preparation: With the cooperation of parents, let children have a simple understanding of food safety knowledge.

2. Material preparation: courseware, happy dolls, junk food, rotten food, "three noes" food and other safe food packages. There are several baskets for food.

V. Teaching methods and learning methods:

Teaching methods: situational introduction, questioning method, intuitive teaching, game competition, etc.

Learning methods: observation, analysis, discussion and multi-sensory participation.

Activity process of intransitive verbs:

(1) was invited to be a guest, and a beaming doll appeared at the beginning of the interest stimulating activity, and was invited as a guest by a bear, which aroused the interest of children.

Happy doll: Hello, kid, I'm a food expert. Happy, my skills are great. Today, I received an invitation from Bear, and he invited me to visit his house with you. Are you happy?

(b) Observation and discussion, analysis and interpretation

1. Look at the first picture of multimedia courseware to know junk food.

Teacher: The bear has prepared many delicious foods for us. Let's see what we have. Let the children observe and talk about the names of food. Then play joyful audio to analyze and explain the knowledge about junk food to the children, and let the children talk about what other foods are junk food in life according to the joyful explanation.

2. Watch the second picture of the multimedia courseware to guide children to observe the food packaging and know the "three noes" food.

The teacher distributed some food to the children, and under the cheerful reminder, let the children carefully observe the outer packaging of the food and compare it. Then, Xiyangyang guided the children to observe the small food production workshops with extremely poor sanitary conditions and told them that the food produced in this environment is the "three noes" food. Then, through a cheery explanation, the children can clearly understand what is qualified and "three noes" food.

3. Observe the picture of the courseware 3. Know the rotten food.

Bear takes out his favorite fruits and eggs (some of which have begun to rot) and invites guests to dinner. Happiness asked the question again: "What's the difference between these foods?" The children observed and discussed, and then happily concluded: food that begins to rot, stinks and has no bright color is rotten food, which contains a lot of harmful bacteria and cannot be eaten.

(3) Purchasing food and consolidating the situation of creating supermarket shelves. The food shelf is mixed with junk food, three non-food, rotten food and some safe food. The children were divided into three groups to have a food sorting competition to see which group bought more food and was safer. The teacher participated in the game as a food inspector.

(4) Expanding activities. Today, we were a guest at Bear's house and learned a new skill, knowing what junk food, "three noes" food and spoiled food are. Please let the children go home and have a look with their parents to see what other foods are junk food, three-no food and rotten food.