1, let children know that greenhouse planting technology can let people eat vegetables in different seasons.

2. Stimulate children's attention to new vegetable planting technologies and be interested in trying small experiments.

3, can take the initiative to communicate their findings with peers, stimulate the desire to further explore things change.

4. Learn to accumulate and record different exploration methods and know that there are many ways to solve problems.

Activities to be prepared

Ppt (information about vegetable markets and greenhouses and pictures of vegetables planted in various greenhouses), plastic baskets (with soil inside), thin organic boards, plastic wrap, etc.

Activity process

There are so many vegetables in the market.

Lead: We visited the market the other day. How are the vegetables in the market? (Many and fresh) Let's sing together. (ppt food market picture, insert music)

1, the song "food market" introduces: there are so many dishes in the food market!

Tell me: What other dishes are there in the market? (Children quickly name all kinds of vegetables)

(Children communicate according to the life experiences they have visited)

Second, Grandma Zhang buys food.

Transition: Our food market is so lively that we can eat all kinds of vegetables all year round. But in the morning, I met my neighbor's grandma Zhang, but she came home with an empty basket and a unhappy face. What's going on here?

1, story: Grandma Zhang buys food.

It turns out that grandma Zhang has just come here from a far-away countryside. She said that in their hometown, radishes, cabbages, greens and other vegetables are also grown in winter, but the food market here is different from their hometown. (The first half of the story ...)

2. Discussion: Is Grandma Zhang right? Why do we have vegetables in different seasons in our market? Let's learn scientific vegetable planting techniques with grandma Zhang, shall we?

(The children communicate according to the previous survey)

Third, many vegetables are planted in the greenhouse.

1, introduce the knowledge of greenhouse planting (briefly introduce the technology of greenhouse planting to children through ppt pictures)

Agricultural greenhouses are divided into glass greenhouses and plastic greenhouses, and the temperature and humidity can be adjusted manually. It is mainly used for off-season planting of vegetables, so that they can also be produced and supplied in winter and spring. It is an indoor unheated greenhouse. Even in the coldest season, it only relies on sunlight to maintain a certain indoor temperature level to meet the needs of vegetable crop growth. )

2. Try to make a simple greenhouse. (teamwork)

3. Summary: Now, agricultural scientists not only grow vegetables in greenhouses, but also use the climate in warm areas and the three-dimensional climate resources in mountainous areas for agricultural production, which provides more convenience for our lives.

4. There are many vegetables planted in greenhouses (ppt watch pictures of vegetables planted in various greenhouses)

Fourth, Grandma Zhang's basket is full.

Introduction: Now Grandma Zhang knows that these out-of-season vegetables are all planted by these scientific planting methods, just as fresh and nutritious. Let's go to the market to buy food with grandma Zhang again! Sing the song "Food Market" again.

Activity reflection

By organizing children to visit vegetable greenhouses this time, the children not only increased a lot of knowledge, but also learned that it is not easy to grow vegetable greenhouses, and it takes hard work to gain something. Know how to respect others and the fruits of others' labor. Stimulate children's desire to explore scientific knowledge.

Encyclopedia: Vegetable refers to a plant or fungus that can be cooked and cooked into food. Vegetables are one of the essential foods in people's daily diet. Vegetables can provide a variety of vitamins, minerals and other nutrients needed by the human body.