"Sow melons and reap beans" PPT courseware 2

Description

"Sow melons and reap beans" PPT courseware 2

Can you read the following words?

moving rose

Tomatoes in short supply

Giving orders, acclimatizing to the environment, secreting peaceful coexistence

Thoughts on first reading

Read the text silently and think about the questions.

(1) What scientific knowledge does this text mainly introduce?

(2) What content does the text introduce around this knowledge?

(3) How is the text introduced step by step? After you understand it, make a reading outline.

overall perception

main content

The first part (the first natural paragraph) writes that genetically modified technology can "reap what you sow".

The second part (paragraphs 2-4) introduces what transgenic technology is.

The third part (paragraphs 5-10) introduces the application of genetically modified technology.

peruse perception

Read paragraphs 2-4 of the text carefully and think: What is the role of genes? What is genetically modified technology?

Read paragraph 4 silently and draw sentences about what genetically modified technology is.

Read the text silently, find sentences using metaphorical writing, and talk about how this writing method helps you understand the text.

1. These genes are the "big housekeepers" of each plant or animal. Some control whether the leaves grow long or flat, and some control whether the tube legs grow long or short... Of course, whether a plant produces melons or beans is also determined by genes. "Giving orders".

2. This technology of “moving” genes is called transgenic technology.

3. In this way, as long as the "big housekeeper" who "moves to a new home" gets used to it and uses his abilities, he will create some kind of new creature that has never been seen before. ... Of course, if the gene that has been "moved to a new home" is not acclimated to the climate and cannot live in it, or the original "residents" do not recognize it and "drive" it out, then this genetically modified technology will be considered a failure.

New discovery

In addition to the amazing way of writing metaphors in the article, there are other ways of writing that are worth learning. Can you find out?

⑴The writing method of anaphora. (paragraphs 1 and 5)

⑵ Let’s ask the interesting way of writing. (Natural paragraphs 1 and 2)

⑶Detailed and appropriate writing method. (Natural paragraphs 7, 8, and 9)

⑷How to write examples. (Natural paragraphs 7 to 10)

Fill in the blanks according to the text content:

(1) People have discovered that there are many (genes) in every cell of living things. These genes are for each plant or animal ("big housekeeper"), some are tubes (whether the leaves grow round or flat), some are tubes (whether the legs grow long or short)... Of course, whether plants produce melons or beans, It is also (genes that “give orders”).

(2) Scientists have figured out (the capabilities of genes) in some organisms. They "move" genes from one organism to another. In this way, as long as the "big housekeeper" who "moves to a new home" gets used to it and uses his abilities, he will create some kind of (unprecedented new creature). This technology of moving genes is called (transgenic technology).

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"Sow melons and reap beans" PPT courseware 3:

"Sow melons and reap beans" PPT courseware 3 Learning objectives 1. read the text aloud. Understand the scientific knowledge introduced in the text. 2. Study the expression method of the text and understand how the author introduces transgenic technology and its applications step by step. And understand the characteristics of the text language. 3. study..

"Sow melons and reap beans" PPT courseware:

"Sowing melons, reaping beans" PPT courseware Genes: People have discovered that there are many genes in every cell of living things. These genes are the housekeepers of each plant or animal. Some control whether the leaves grow round or flat, some tube legs grow long or short, and of course, whether the plant produces melons or beans...

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Update Time: 2024-07-03

This template belongs to Chinese courseware S Edition Sixth Grade Chinese Volume 2 industry PPT template

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