I'm going to take the text "Send you a bouquet of genetically modified flowers" under the eighth edition of Jiangsu Education Press in my class. Who has a complete lesson plan? Hurry up, thank you.

Send you a bunch of genetically modified flowers?

Teaching objectives:?

1. Understand the unique advantages of new biotechnology in creating new flower varieties and the excellent characteristics of transgenic flowers; ?

2. Learn the general-sub-general structure of the text; ?

3. Group exchange experience language and emotion language. ?

Emphasis and difficulty in teaching:

New biotechnology and its unique advantages in creating new varieties of flowers and the excellent characteristics of transgenic flowers?

Teaching hours: one class hour?

Teaching process:?

First, lead design:?

An advertisement of a flower company said, "Do you want a bunch of blue roses? Do you want to order an eternal bunch of flowers? What kind of flowers do you want, as long as you describe the image in your heart, we can create the flowers you want for you ... "You may wonder: How can roses be blue? How can a hundred flowers blossom and remain invincible? Is this a cheating company? No, it's true! This is a transgenic flower created by new biotechnology. This flower not only has the above characteristics, but also has many wonderful characteristics. If you want to know about this colorful flower, I'll send you a bunch of transgenic flowers.

Second, background knowledge:?

This article is a scientific and technological exposition. The topic is to draw out the object to be explained by people giving flowers to each other, in order to express their thoughts and good wishes, so that readers can have a strong curiosity and feel a kind of affection at the same time. The research object of this paper is transgenic flowers.

The scientific description of transgenic technology for cultivating transgenic flowers was published in Nature Exploration, No.21,20065438. Transgenic technology refers to the use of molecular biology technology to transfer the genes of some organisms to other species, transform the genetic material of organisms, and transform transgenic organisms into the goals needed by human beings in terms of traits, nutrition, consumption quality and so on. Transgenic technology has broad application prospects in many fields such as agricultural production, animal husbandry and medical research. ?

Third, feel beautiful:

Play video materials about genetically modified flowers, so that students can feel the beauty of genetically modified flowers?

Fourth, reading the text for the first time, the overall impression:?

1. Read the text and solve the new words?

Did the flowers dream? China?

2. Circle the statements that have been made in cultivating new varieties of genetically modified flowers and organize exchanges to see who has made them complete and clear.

3. Clarify the structure of the article?

(1) (1-3) Explain the unique advantages of new biotechnology and what transgenic flowers are. ?

(2) (4-6) Explain the excellent characteristics of transgenic flowers. ?

(3) (7-8) Summarize the full text. ?

Total score. Total score?

5. reread the text and read it intensively?

1. Guide students to read the second and third paragraphs at the beginning of the text, pay attention to the related words, and understand how the author describes the advantages of new biotechnology layer by layer and the methods of improving flowers ring by ring. ?

2、? Special color. This paper mainly introduces the achievements made by scientists in cloning color-related genes and their application value. Gene, cloned "multiple", only Petunia was cloned to two; The application value is manifested in two aspects, one is to cultivate 3. Particularly novel. This paper mainly introduces the achievements made by scientists in cloning related genes and promoting the emission function change of flowers in other ways. ?

4、? Long life. This paper mainly introduces the achievements made by scientists in prolonging the fresh-keeping period of flowers. ?

Sixth, expand and extend:

1. Guide students to spread the wings of association on the basis of studying this article and discuss the question "What kind of transgenic flowers do you need" enthusiastically. ?

2. Improving flowers can start from the aspects of shape, color, fragrance and longevity. What else can we do to meet human needs? ?

Vii. blackboard design:?

Send you a bunch of genetically modified flowers?

Color?

Achieve a novel and beautiful future (Lenovo)?

life

New color flowers, second, color modification. ?

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Teaching objectives:

1. Understand the unique advantages of new biotechnology in creating new flower varieties and the excellent characteristics of transgenic flowers;

2. Learn the general-sub-general structure of the text;

Teaching emphases and difficulties:

New biotechnology and its unique advantages in creating new varieties of flowers and the excellent characteristics of transgenic flowers

Class schedule: 1 class hour

Teaching process:?

First, the initial reading of the text, the overall perception (sketch circle method):

1, read the text and explain the new words:? Hua Meng Zhonghua.

2. Circle the statement about the achievements of cultivating new varieties of genetically modified flowers, and organize exchanges to see who has made it complete and clear.

3. Explain the structure of the article

(1) (1-3) Explain the unique advantages of new biotechnology and what transgenic flowers are. ?

(2) (4-6) Explain the excellent characteristics of transgenic flowers. ?

(3) (7-8) Summarize the full text. ?

"Total-Divide-Total" Structure

Second, reread the text, local intensive reading: (suspicious questioning method)

(1) Students' questions:

1. What is a transgenic flower? Transgenic flower is a new flower variety created by understanding the physiological mechanism of a certain character, discovering and cloning various genes directly or indirectly related to it, and after in-depth research, modifying it and transferring it into flowers that need to improve their quality.

2. What are the excellent characteristics of transgenic flowers? What does this book say?

(1) Special color. This paper mainly introduces the achievements made by scientists in cloning color-related genes and their application value. One is to cultivate flowers of new colors, and the other is to decorate their colors.

(2)? Particularly novel. This paper mainly introduces the achievements made by scientists in cloning related genes and promoting the functional changes of flowers in "fragrance and shape" by other means.

(3)? Long life. This paper mainly introduces the achievements made by scientists in prolonging the fresh-keeping period of flowers.

(2) Teacher's guidance:

1. Guide students to read the second and third paragraphs at the beginning of the text, pay attention to the related words, and understand how the author describes the advantages of new biotechnology layer by layer and the methods of improving flowers ring by ring.

2. Can you name the most important information (key words) in the definition of genetically modified flowers?

Third, classroom discussion, expand and extend:

1. If we have reached the "future day", what kind of transgenic flowers do you need?

2. Improving flowers can start from the aspects of shape, color, fragrance and longevity. What else can we do to meet human needs?

Fourth, the blackboard design: