Composition teaching of plant description

1. Composition teaching plan for primary school students: How to write plants, we should pay attention to the following points:

1, we should grasp the characteristics of the whole plant and its parts. Generally speaking, you can write down the size, height and shape of the whole plant. For example, a child wrote down the overall impression of cactus: "When I was a child, it was furry, like a hairball on a child's hat;" Now that I have grown up, I look like a little hedgehog again. " The shape of cactus is vividly illustrated by "wool ball" and "hedgehog". You can write roots, stems, leaves, flowers and fruits, and write their shapes. , color, smell. Write in a certain order. There is a child who writes about Chinese rose flowers. First of all, he wrote about the color of the stem: "The stem of the rose is thin and long, and there are many dark red thorns on the dark green stem"; Then write down the color of the leaves, beginning with: "The leaves of Chinese rose are dark green with soft thorns around them, just like a pinion"; Then write the color of the flowers: "There are so many colors of Chinese rose flowers: pink, crimson, rose, orange and silvery white"; Finally, write the fragrance of flowers: "A gust of wind blows, and the Chinese rose gives off bursts of fragrance. I sniffed it with my nose and felt quite comfortable.

2, to grasp the main characteristics of plants, don't cover everything, other similar plants in the same place, you can write simply, or even don't write. Different from other plants, write in detail, or write what impresses you the most. For example, a child wrote about the old banyan tree, saying that its roots are prominent and deep: "The roots of the old banyan tree are deeply rooted in the soil, absorbing water and nutrition, making it thrive"; Write about the trunk, highlighting "thick" and "thick skin": "The trunk of the old banyan tree grows thick and strong, and it takes about two children to hold hands to surround it. There is a thick layer of bark on the thick trunk, just like wrinkles on the old man's face. Write that the branches and leaves are prominent and lush: "Like a big umbrella, sometimes birds chirp in the tree." "I held my head high and made great efforts to see the bird through the cracks in the tree."

3. Pay attention to different seasons and weather changes, and pay attention to the different characteristics of plants in different growth periods. For example, in general, in spring, branches and leaves sprout; In autumn, the leaves are yellow But some trees have regular seasons, and some places have a warm climate, so even in winter, the leaves will not fall out. So write according to the observed actual situation.

4. Write down all kinds of plants and master the main characteristics of each plant. For example, in the article "Beautiful Flower Bed", the little author wrote the thorn pine, cockscomb flower, morning glory flower and dog tail flower in the flower bed like this: there is a thorn pine in the center of the flower bed, which stands tall like a delicate pagoda. There are all kinds of flowers around. Celosia cristata is as red as fire from a distance. A closer look shows that all the flowers are like red crowns on the rooster's head. Morning glory looks as white as a mass of snow from a distance. Looking closely, morning glory seems to be able to issue the horn of attack command. The dog's tail flower is exactly the same as the puppy's tail. It is furry and swaying in the wind, and it is also very beautiful. For each plant, the author only wrote the main characteristics. The shapes of the four plants are described by pagodas, cockscomb flowers, horns and puppy tails. Use "fire" and "snow" to describe the colors of cockscomb and morning glory respectively.

2. Write a composition about the growth process of plants.

Recently, I suddenly became interested in the growth of plants, so I bought some small mung beans. I want to plant them in the soil, but my mother said it would be faster to plant them in the water. In order to see what little mung beans look like quickly, I did as my mother said.

Put mung beans in a clean bowl first, then spray some water, and you're done. Looking at these mung beans, which are illuminated by lights and moistened by water, is like sparkling pearls that have just been fished out from the bottom of the sea. I am looking forward to, looking forward to, hoping that they can grow up quickly.

The next day, I saw mung beans grow white and tender bean sprouts, small and tender, white as a chubby baby. With the change of time, the bean sprouts grow bigger and bigger. Almost two to three centimeters, it began to take off its green robe and reveal its white underwear. After two or three days, I took off my green robe. What will happen next? Let's explore together!

After a day or so, adzuki beans began to crack gradually, and the cracks became bigger and bigger. Within a day or two, two bright green leaves came out of the cracks, and the leaves became bigger and greener day by day. I looked at the leaves on each mung bean, looked at them, looked at them, and it seemed that there was a new life trembling on each leaf.

Time passed slowly, and brown roots grew at the bottom of bean sprouts, and the roots became longer and longer. One day, I found many fine hairs on the petiole. I touched them with my hand. They are thick and itchy. How interesting!

What will you find next? Will there be many small mung beans? Will small mung beans be like small lanterns? Will mung beans grow into saplings ... Faced with these interesting question marks, I must continue to observe and find out the answer.

After more than ten days of observation, I realized the wonder of nature and the pleasure of observation. Ordinary things you know, and things you like.

3. Description of Plant Growth Composition Once I started the experiment of "Soybean Growth Process".

I'll prepare transparent plastic cups, dirt, paper towels and soybean seeds first. Then spread paper towels around the cup and put more than half of the soil in the cup. Then, I put some seeds between the cup and the tissue. Finally, I crushed a small part of the remaining mud and put it in a cup (the seeds are about one centimeter deep from the surface), and poured some water to make the paper towel completely wet. So the seeds were planted.

A few days later. I came to the windowsill to observe the seeds. I found the color of the seeds changed a little. Originally, the color of the seed was big yellow, but after these days, the appearance of the seed was a little light and it felt a little transparent. The seeds are particularly full and the seed coat is a little cracked.

Two days have passed. I went to the windowsill again to observe the seeds. I looked into the cup. To my surprise, the seeds germinated. The shell of the seed cracked. Buds are drilled from the inside, and the color of buds is light yellow with a little cyan. The top of the bud is pointed and looks very tender. This is the bud head. The bud head grows downward. There is a question in my mind: why does the bud of a seed grow down? Isn't this impossible to drill out? I thought about it and watered it.

The next day, I came to the window platform again to observe the seeds. Through my observation. Seeds change greatly now and when they germinate. When it germinated, the seed shell just broke, and now most of it has fallen off. I really want to help it peel off all the shells. The real small leaf bud in the seed has left its original position and is close to the outside. Two trees emerged from the soil. Originally it was closed, but now it is scattered, with a small bud in the middle. I also found that each bud has two leaves, which look furry like a love shape.

A few days later, I came to the windowsill again. There were many small green bean sprouts in the cup. I also found that its leaves are two opposite pieces.

Now we know why the new bud of this seed grows downward. That's because it's not a bud, but a root, so it should grow down.

When I came to the window sill to observe again, the soybean had changed from a seed to a bean sprout, and then it grew up slowly from the bean sprout. . Now there is a soybean seedling wrapped around security window to help him grow. This soybean seedling is also the fastest growing one.

Although growing soybeans is small, it is a good start for me to experience plant growth.

4. How to write a composition about observing plants? Teach me to write a composition about observing plants. The grass is green and luxuriant, and everyone loves bright roses, but I like the unknown grass best.

Spring is coming, and whenever I pass by the garden, I will squat down to have a look at the grass that is gradually turning green and smell its faint earthy fragrance. I remember one summer, I went to Hushan Park with some good friends.

Walking on the green grass is like walking into a green ocean. As usual, I squatted down and stroked the fragrant grass gently, but I couldn't help but exclaim, "It smells good!" " "In the afternoon, it gradually became cloudy, dark clouds filled the sky, and there were a few dull thunder in the distance.

"It's going to rain", I don't know who shouted, so we hurried to the pavilion in the park. It began to rain cats and dogs after the lightning. We breathed the fresh air of nature in the rain, and talked and laughed excitedly in the pavilion, glad that we were not wet.

After a long time, the rain finally stopped. When we walked out of the exhibition hall, the sky was particularly blue after the rain. A beautiful rainbow hangs in the eastern sky, and the surrounding trees and bridges are washed away by the rain.

I suddenly remembered the grass, looked down and saw the grass that was green just now. At this time, it was already a piece of Wang Yang, and the grass only showed a little nod in the rain, swaying with the wind. I looked at those rickety grasses and thought, "Alas, these poor grasses are drowning, so pitiful!" " "My heart silently sigh.

After a while, the rain gradually penetrated into the ground. I was surprised to find that the grass stood up stubbornly. The crystal dew on the grass sparkled in the sun.

I can't help but think of a poem: the boundless grass on the plain comes and goes with the seasons; Wildfire can't burn it out, but the spring breeze can revive it. Every time I see grass, it will bring me infinite enlightenment.

The vigorous vitality and indomitable spirit of the grass inspire me and make me study hard and grow sturdily. I want to be as brave and unyielding as grass and decorate this beautiful spring with my own wisdom.

I admire you, Grass! Tomatoes The surface of tomatoes is a layer of red skin, but the round branches are green. If anyone has eaten persimmon, everyone knows that tomatoes are very similar to it.

But why are tomatoes vegetables, not fruits? Tomato, also known as tomato persimmon, is called June persimmon in ancient times, which is a good news for three yuan. Fruit is rich in nutrition and unique in flavor.

It can be eaten raw, cooked and processed into tomato sauce, juice or canned whole fruit. Tomato is one of the most widely planted fruits and vegetables in the world.

The United States, the Soviet Union, Italy and China are the main producers. In Europe, America, China and Japan, there are large greenhouses, plastic greenhouses and other protective facilities for cultivation.

It is widely cultivated in all parts of China. The planting area continues to expand.

Tomato is an annual or perennial herb of Solanaceae. This plant is very tall.

6 ~ 2 meters. The whole plant is covered with mucus gland hairs.

The stem is semi-erect or semi-tendril, prone to lodging, with a height of 0. 7~ 1。

0m or 1. 0~ 1。

3m is different. Stem has strong branching ability, adventitious roots are easy to grow on stem nodes, stems are easy to lodging and take root when touching the ground, and tomato cutting propagation is easier to survive.

Odd pinnately compound leaves or pinnately parted, alternate; Leaf length 10 ~ 40 cm; Leaflets are extremely irregular, with different sizes, usually 5-9 pieces, oval or oblong, 5-7 cm long, tapering at the top, irregular serrations or lobes at the edge, and skewed base and petiole. Flowers bisexual, yellow, self-pollinated, compound raceme.

Flowers 3-flowered, lateral cymes; Calyx 5~7-lobed, lobes lanceolate to linear, persistent in fruit; Corolla yellow, radial, 5~7-lobed, about 2 cm in diameter; Stamens 5~7, inserted in tube, filaments short, anthers semi-polymerized, or panicles around pistil; Ovary 2-loculed to multiloculed, stigma capitate. The fruit is a berry, oblate or nearly spherical, juicy, orange or bright red and smooth.

The seeds are flat, kidney-shaped, grayish yellow, with a 1000-grain weight of 3. 0~3。

3g, with a service life of 3~4 years. Summer and autumn blossom and bear fruit.

The root system is developed and has strong regeneration ability, but most root groups are distributed in the soil layer of 30~50cm. Tomatoes have high nutritional value, although they are sour, because they contain a lot of malic acid and a little citric acid.

These all help digestion. Requirements for Environmental Conditions (1) Temperature Tomato is a warm vegetable. Under normal circumstances, the optimum temperature for assimilation is 20~25℃, and the optimum soil temperature for root growth is 20~22℃.

Increasing soil temperature can not only promote root development, but also significantly increase the content of nitrate nitrogen in soil, accelerate growth and improve yield. (2) Illuminated tomato is a light-loving crop, with a light saturation point of 70000lx and a suitable light intensity of 30000~50000lx.

Tomato is a short-day plant. In the process of changing from vegetative growth to reproductive growth, short-day is basically needed, but the requirements are not strict. Some varieties can germinate and blossom in advance under short sunshine, while most varieties bloom earlier under 1 1~ 13h sunshine, and the plants grow healthily. (3) Water Tomatoes need more water, but they don't need regular irrigation. Generally, the soil humidity is 60-80% and the air humidity is 45-50%.

High air humidity not only hinders normal pollination, but also causes serious diseases under high temperature and high humidity conditions. (4) Soil and nutritious tomatoes do not require high soil conditions, but in order to obtain high yield and promote good root development, fertile loam with deep soil layer, good drainage and rich organic matter should be selected.

The optimum pH6~7 value of soil is 6~7, and the soil with acid or alkali exceeding the standard should be improved. Tomatoes need to absorb a lot of nutrients from the soil during their growth. According to Eigerstein, every 5,000 kilograms of fruit needs to absorb 33 kilograms of potassium oxide, 10 kilograms of nitrogen and 5 kilograms of phosphoric acid from the soil.

According to legend, the hometown of tomatoes is Peru and Mexico. It was originally a wild berry growing in the forest. Locals regard it as poisonous fruit and call it "Wolf Peach", which is only for viewing and no one dares to eat it.

According to local legend, wolf peach is poisonous, which will cause pimples and tumors. Although it is bright red when it is ripe, the red fruit with green leaves is very beautiful and attractive.

However, just as colorful mushrooms are highly toxic, people still stay away from them. No one dared to take a bite, but regarded it as an ornamental plant. Tomatoes are rich in nutrition, so everyone should eat more.

Luffa is a small plant and my favorite plant. It thrives.

5. Writing guidance for primary school students: How to write plants 1? Observe carefully and grasp the characteristics.

Before you start writing, you should carefully choose a plant that you like to observe, and use all your organs when observing. The focus of observation is on the stems, branches, leaves, flowers and colors of plants, so as to understand their size, height, shape, color and taste, so as to obtain first-hand materials.

We must also grasp the characteristics and observe purposefully. Such as the posture, color and flowering period of plants when they bloom; Changes of plant leaves at different times and seasons.

In short, we should master the differences between plants and other plants and write their characteristics. 2. Write in a certain order.

The order of writing plants is not exactly the same as that of writing landscapes. The scene has a large area and a wide field of vision, and the observation points can be constantly changed.

Writing about plants often focuses on one plant, just like close-ups in photography. Although the observation point is only a kind of plant, it must be in order.

You can start with the whole, see what it looks like, and then write part by part. You can also write it in chronological order, what grows first, what grows again, and what grows last; It can also be written in the order of root, stem, leaf, flower and fruit. In short, you should write in a certain order, so that the composition is clear and orderly.

3. Express your favorite feelings. Before writing a composition, you may wish to read the text "I love Yangmei in my hometown" in the reading unit.

This article is full of the author's deep feelings, not only from the shape, color and taste of Yangmei, but also from a specific thing: when I was a child, Yangmei ate too much and my teeth were sore, which pushed my feelings to * * *. First write down why you like it, that is, why you like it, and then express your feelings through specific descriptions.

For example, in "I love Yangmei in my hometown", the author wrote Yangmei like this: evergreen branches spread out all the year round, and long and narrow leaves laugh in the rain and fog. This is the result of the author's favorite emotional association.

If you write like this: Myrica rubra leaves are long and narrow, and the four seasons are green, which looks very dull and has no feelings. Writing a still life vividly through reasonable association can make the article concrete, vivid, vivid and full of true feelings.

6. How to write a composition about plants? How to write a composition about the plants on my balcony? There is a very humble cactus.

The cactus's body is like a piece of jade and a cute little hedgehog. It is covered with thorns like steel needles. Don't underestimate these thorns. This is the weapon it uses to defend itself and fight back! I was stabbed by it, and my mother was stabbed by it, which was very painful. My mother tried to throw it away many times, but I refused, because I have special feelings for it. I love that cactus.

When spring comes, everything wakes up. A little cactus appeared on its mother. It looks so fragile, as if a gust of wind could blow it away. Its mother is afraid that her children will be bullied by the cold wind in early spring, and always uses her body to block the cold wind, but the cactus always gets up. Finally, with the encouragement of Grandpa Chun Lei and the help of Sister Chun Yu,

In late spring and early summer, cactus grows buds. Strangely, cactus blooms in a "sequence", always two flowers bloom together, like a pair of twin sisters, and like a bow tied on the little girl's head. Cactus produces white and fragrant flowers, like a beautiful fairy in a white dress, dancing gracefully on the jade stage, emitting intoxicating fragrance from the dress.

Autumn, the harvest season, cactus grows up, its use can be much more! You can cut into pieces and soak them in cool and delicious tea to quench your thirst. You can also eat it. It is nutritious and can be used as a bonsai ... one after another, but the most surprising thing is that it can be boiled into liquid medicine to cure glass.

People love magnificent peonies and peonies, autumn chrysanthemums of various shapes, and sweet-scented osmanthus flowers of ten miles ... but I love the cactus with a humble appearance, not only because of its appearance, but also because of its quality.

7. Write an article about plants [Author: Wu Chunxia reposted from: original hits on this site: 1589 update time: 2008- 10-30 article entry: Wu Xiao Fengtai] Write a familiar plant composition guidance tutorial Fengtai Wu Xiaoxiu.

2. Observe life from multiple angles, discover the richness of life, capture the characteristics of things, and strive for creative expression. 3. Choose the appropriate expression according to the expression center.

Arrange the order and details of the content reasonably and express your meaning clearly. 4. Have the consciousness of writing independently, and pay attention to collecting materials, conceiving, drafting outlines, modifying teachers and other links in the writing process.

Teaching purpose: 1. Through the practice of this composition class, students can basically master the method of writing plants. 2. Cultivate students' habit of observing carefully in order.

3. Be able to focus on a favorite plant, grasp the characteristics, and write articles with specific content and fluent sentences in a certain order. Analysis of academic situation: students' ability to collect data is relatively weak, and there are few ways, so teachers need to spend a lot of time explaining data collection and content collection.

Because of the tight time, I didn't know the articles written by the students in time, and the students didn't describe the plants in detail (introducing flowers, stems, leaves, fruits, etc. ), so students don't speak enough in class, giving the impression that there is no link to guide students to observe carefully. Design concept: composition teaching should pay attention to the guidance of teachers and guide students to recall the structure and writing of cactus.

Ask the students to clearly describe the shape of plants (flowers, stems, leaves, fruits, etc.). ), living environment, characteristics (personality) and people praised by this plant. In writing, we can learn rhetorical devices such as metaphor, personification and quotation. I also learned the writing method of borrowing things to describe people and echoing them from beginning to end.

In the composition guidance class, guide students to choose materials, choose a familiar plant, ask students to answer their favorite plants and reasons, and then guide students to determine the theme of the article. The same flowers, Chunlan, Xiahe, Qiuju and Dongmei, all show their richness. Even the same flower has different shapes, colors and smells in different seasons or at different times.

It is also green, and there are light green, green and dark green. It is also fragrant, and it is also divided into fragrance, light fragrance and dark fragrance.

Therefore, guide students to grasp the characteristics of the plants they write and determine what aspects to describe and what writing methods to use. 1. Observe plants carefully and master their characteristics.

Observe in order. According to the requirements of the exercise, first observe from a distance to master the overall impression of the plant, and then observe from a close distance to master the local characteristics of the plant, such as the characteristics of stems, leaves, flowers and fruits.

Local characteristics are very important, which is the key to writing a specific article. 2. The description should be in order and the article should be focused.

On the basis of orderly observation, we should also describe it in an orderly manner. According to the requirements of practice, we can focus on describing the local characteristics of plants, such as stems, leaves and flowers, from far to near and from whole to part.

3. Pay attention to understanding things or expressing feelings by borrowing things. This requires us to explain the truth of being a man according to the inherent characteristics of plants, or to express a good feeling with the help of some characteristics of plants.

Writing in this way can make the article more meaningful. Teaching emphasis: 1. Through the practice of this composition class, students can basically master the method of writing plants.

2. Cultivate students' habit of observing carefully in order. 3. Be able to focus on a favorite plant, grasp the characteristics, and write articles with specific content and fluent sentences in a certain order.

Teaching difficulties: 1. Through the practice of this composition class, students can basically master the method of writing plants. 2. Be able to focus on a favorite plant, grasp the characteristics, and write articles with specific content and fluent sentences in a certain order.

Teaching time: preparation of teaching AIDS for one class: teaching process of computer courseware: 1. Introduction and enlightenment: 1. Nature is beautiful. Lush evergreen trees and colorful flowers decorate the dog's nature and people's lives with their colors, shapes and functions, creating a beautiful and colorful environment for us. Our survival and life are inseparable from plants, and flowers and trees have become an important theme for students to practice their compositions.

Today, we have a composition instruction class together. Student: Read the topic together-write about a plant you are familiar with. Please open the book, 80 pages, and read the requirements by name.

Second, review the cactus lesson. 1. How did the author write the lesson "Cactus"? Health: At the beginning, the author introduces the characteristics of cactus: tenacious and peculiar vitality. 2. The author first introduces the characteristics of cactus-tenacious and peculiar vitality, and then describes it from several aspects. Health: four aspects, 1 tenacity, 2 resistance to wild animals, 3 strong regeneration ability and 4 bright flowers.

3. Which of these four aspects does the author pay attention to? How is it described? What kind of writing is used? Health: tough personality 1 growth-shape, color 2 living environment health: metaphor, personification, comparative writing methods. 4. Looking at the full text, combined with Qin Mu's article "Where there are many cacti", do you think the author is just praising cacti? Health: No, the author is still praising the soldiers on the island. 5. This method is called keeping in good health: borrow things to compare with people. 6. We should not only learn how to compare things with people, but also learn what writing methods? Health: the third writing method of echoing from beginning to end. Writing instruction: 1. Recall the structure and writing of cactus.

Teacher's writing on the blackboard: grasp the characteristics and describe them from several aspects: aspects: the spiritual quality of living environment such as flowers, stems, leaves and fruits. Writing methods: metaphor, personification, comparison, quotation, metaphor, and echo from beginning to end. 4. Select the material 1. Examination: Choose a familiar plant, learn the writing method of the text, and write a composition. 2. What's your favorite plant? Why? Say it briefly.

Student: Let's say three. Have you decided on the topic of your composition? Student: Say your own composition topic. Five, determine the main characteristics of plants.

1. What are the main characteristics of the plants you choose? 2. You should learn from.

8. Teach me to write a composition about observing plants. First, multi-angle observation. Observing a plant from different angles will get different results. If you want to know a plant correctly, you must observe it from many angles. For example, when observing leaves, we should not only pay attention to the shape of leaves in the sun, but also pay attention to the shape in rainy days, so as to accurately grasp its characteristics. Second, we should pay attention to key observations. We should observe plants from many angles and directions. We don't mean to cover everything, no matter how big or small. We should observe with emphasis and selectivity according to our writing purposes and requirements. Parthenocissus, for example, is a strange plant that can climb walls. Why does it climb the wall? Because it has feet, the feet of Parthenocissus tricuspidata should be the focus of my observation: What are the feet of Parthenocissus tricuspidata? How did it climb the wall? Give full play to your imagination on the basis of observation. When we observe plants, we should not only see and listen with our eyes, but also "touch" with our hearts. That is to say, we should give full play to our imagination when observing plants, so that the plants in our eyes are more vivid and ingenious. Fourth, we should make good use of rhetoric. The description of plants not only needs to be described in a certain order, but also needs to be described by various rhetorical devices. Only through such "processing" can it be done.