I. Reasons

(1) The boy asked, "Why is the sea blue?"

(2) After Raman explained, he doubted his own explanation.

Second, after that

The process and results of (1) Raman research

Third, the result

The little boy got the correct answer to his question.

(2) Raman won the Nobel Prize in Physics by virtue of Raman effect.

② Teaching objectives:

1. Understand the significance of "curiosity" to scientific inquiry, and establish a good student view of learning to ask questions.

2. Learn the writing method of interspersed discussion and explanation in narrative stories.

Emphasis and difficulty in teaching:

1. Think about the relationship between "known" and "unknown", and make curiosity an inexhaustible motive force for students to seek knowledge.

2. Instruct students to learn to use writing skills interspersed with discussion and explanation in the process of narration and explanation.

Design of main teaching links:

First, ask questions to lead in and arouse interest.

1, inspire questions and speak freely.

As we all know, the sea is blue. However, have you ever wondered why the sea is blue?

2. Write on the blackboard and introduce new lessons.

Second, read the text for the first time and understand the content.

1, students read the text carefully to understand the main content.

2. Summarize the content of the text and emphasize the role of "curiosity".

Raman was moved by a curious child and awakened the "curiosity" of science. After scientific exploration, he finally found out the reason why the sea water is blue and won the Nobel Prize in Physics.

Third, read the text again and think about it.

1, Thinking: Why did Raman win the Nobel Prize?

To be clear: 1) He discovered the "Raman effect" and made a contribution to the development of human science.

2) It was "curiosity" that led him to the sacred platform.

2. Organize a discussion according to the text: What will happen if you lose your curiosity about scientific research?

1) Read the text again and find examples. (Focus on reading the chapter11-15)

2) Summarize the examples and think about their intentions.

Taking two scientists, Aurio Curie and Justus von Liebig, as counterexamples, the author contrasts with Raman's curiosity and tells people the consequences of losing curiosity, thus emphasizing the importance of curiosity in exploring scientific knowledge.

Fourth, summarize the text and start.

1, guide students to list the successful cases of Chinese and foreign scientists because of curiosity, and further understand the reason that scientific inventions need curiosity. (Example: Newton was curious to see the apple fall to the ground, and then he founded the theorem of universal gravitation; Watt was curious when he saw the kettle boil, so he invented the steam engine. )

2. Circle the central sentence of the text (section 18) and discuss the meaning of the sentence.

Be clear: Only by keeping the spirit of continuous reflection, diligent pursuit and unremitting exploration can we succeed.

3. Students cite examples from daily study and life to understand the importance of curiosity cultivation in learning.

Verb (short for verb) Task:

Learn the writing method of interspersed discussion and explanation in narrative stories and write a similar life story.

③

Brief analysis of teaching materials;

This text tells the story of Indian scientist Raman. Inspired by the curiosity of a little boy on a Mediterranean ship, he studied the reason why the sea water is blue, and found a universal light scattering effect from solid, liquid and gas respectively, which showed Raman's spirit of continuous exploration and commitment to scientific research.

Teaching objectives:

1. Learn to read the words "inert, taboo, taboo and liquid" and write the words "inert, innocent, guilty and liquid", and master the words "inert gas, guilty, liquid, close your eyes, sunshine, warmth and stability".

2. Read the text aloud and master the content of the text.

3. Understand the profound sentences in the text, and experience the spirit of Raman's constant pursuit and courage to explore.

Teaching emphasis: Understand how Indian scientist Raman discovered the light scattering effect.

Difficulties in teaching: understanding the warning given by Raman's discovery, and understanding the enlightening and instructive sentences in the text.

Teaching preparation: word card and Raman introduction.

Class arrangement: two class hours.

first kind

Teaching objectives:

1. Learn to read the words "inert, taboo, taboo and liquid" and write the words "inert, innocent, guilty and liquid", and master the words "inert gas, guilty, liquid, close your eyes, sunshine, warmth and stability".

2. Read the text for the first time and master the main content of the text.

3. Clear the context of the text, divide the paragraphs and summarize the meaning of the paragraphs.

4. Learn the first part.

Teaching preparation:

1. word card.

2. Introduction to Raman.

Teaching process (this article comes from Feifei. Lesson. One piece Garden, excellent educational resource network);

First of all, stimulate interest through conversation and introduce new lessons.

1. Introduction: It is very common for apples to fall from trees when they are ripe. Newton thought when he was a child, "Why does it fall instead of rising?" After a long time, he discovered "the gravity of the earth"; When the water in the kettle boils, the lid of the kettle will keep jumping up, which attracts Watt's attention. When he grew up, he invented the steam engine ... all scientists who have done things have one thing in common: they all have the curiosity of pursuing the unknown in the "known", so as to make scientific discoveries and inventions and make scientific progress, and only then can human modern civilization be realized. Today, we will learn the story of the famous Indian physicist Raman.

2. Introduce the characters.

Raman (1888—— 1970). Because of his research work on light scattering and the discovery of Raman effect, he won the 1930 Nobel Prize in physics.

Raman is an Indian and the first Asian scientist to win the Nobel Prize in Physics. Raman is also an educator. He is engaged in postgraduate training and has sent many outstanding talents to many important positions in India.

Second, the preliminary reading of the text, the overall perception

1. Read the text silently, mark the natural paragraph number, sketch the new words and learn the new words by yourself.

2. Think about it: What is the main content of the text?

3. Find out what you don't understand.

4. Self-study group communication. If you still don't understand, write it down.

(1) Show the new words and check them.

Pronunciation: taboo and guilt

Glyph: laziness, guilt

(2) Understanding words

Stunned: unable to speak for a moment because of excitement, anger or inexplicable reasons.

Interesting: Rao: rich, more. Very interested.

Guilt: Self-reproach for one's mistakes, feeling ashamed and uneasy.

Quite successful: quite: very; As: make achievements. Make a lot of achievements.

Close your eyes: plug: jam. Close this article and transfer it from Feifei Courseware. Yuan FFKJ.Net didn't look at it, but stopped listening. Exaggeration describes indifference to external things and being divorced from reality.

Scattering: When light passes through dusty air and other media, some light will change direction in many directions.

Honor: A special honor.

5. Find out the six elements of the story

(1) Time: 192 1 year.

(2) Location: On a ship passing through the Mediterranean.

⑶ Characters: Raman and an Indian mother and son.

(4) Cause: The boy raised the question "Why is the sea blue", which made Raman doubt the original explanation of the British physicist Rayleigh, and the boy's strong curiosity inspired and alerted him.

After returning to China, Raman made an in-depth study of the boy's questions and found the light scattering effect, becoming the first scientist in Asian history to win the Nobel Prize in physics.

[6] Results: That is, the enlightenment of the story: be curious about the "known" and be good at getting new discoveries from the "known" and "unknown".

6. According to the six elements of the story, practice summarizing the main content of the article.

Inspired by the curiosity of a little boy on a Mediterranean ship, Indian scientist Raman studied the reason why seawater is blue, and found a universal light scattering effect from solid, liquid and gas respectively.

7. Divide the article into sections and summarize the meaning of the paragraphs.

The first part (paragraph 1-8) was written on a ship in the Mediterranean. Raman explained to a little boy that the sea is blue because it reflects the color of the sky.

The second part (paragraph 9- 13) is about Raman's doubt about his explanation of the little boy. Later, he studied that seawater scatters sunlight and appears blue, thus discovering a universal light scattering effect.

The third part (paragraph l4) reminds people through the story of a boy that the new discovery lies in your "known" and "unknown". This paragraph is a summary of the full text.

Third, learn the first part of the text

1. Students read the first paragraph L-8 of the text silently and talk about the reason why the Mediterranean is named.

2. What does "interesting" mean?

3. What is the reason why Raman thinks the sea water is blue?

4. Teachers should give timely guidance to guide people to understand.

Fourth, class summary.

From the conversation between the boy and his mother, we can see that after knowing that the sea is called the Mediterranean, he still needs to know why it is called this name, and then he wants to know why the sea is blue. He can always create new problems from what he already knows and want to know what he doesn't know. This conversation between mother and son aroused Raman's interest and explained it to the child.

Five, homework design

1. Copy new words.

2. Read the text aloud.

Second lesson

Teaching objectives:

1. Continue to learn the text and understand the content.

2. Understand the profound sentences in the text, and experience the spirit of Raman's constant pursuit and courage to explore.

3. Read the text aloud.

Teaching process (this article comes from Feifei. Lesson. One piece Garden, excellent educational resource network);

First, read the text carefully and understand the emotion.

1. query.

2. The second part of the research text: Why did the boy's question mark on the Mediterranean ship lead Raman to the podium of the Nobel Prize in Physics?

(1) Read paragraph 9 to understand Rayleigh's point of view.

⑵ How did Raman discover the "light scattering effect"?

(1) The boy's endless "why" caused Raman to think, and he doubted his explanation of the child (paragraph 10,1/).

Understand this sentence: "that curious child, those big eyes for knowledge, and those' why' that keep popping up, make Raman feel deeply guilty." As a scientist, he found that he unconsciously lost the boy's curiosity to pursue the unknown in the' known', and his heart could not help but be shocked. "

Understand that sentence: "losing curiosity is the biggest taboo of scientific discovery and invention." Even scientists with great achievements will turn a blind eye and stop. "

② The process and results of Raman research (paragraph 12). This paragraph is described in three layers.

The first layer: writing Raman denies Rayleigh's explanation and thinks his explanation is insufficient.

The second layer: he proved the principle that the scattering of light by water molecules makes the sea water blue through in-depth research.

The third layer: Later, Raman discovered the ubiquitous light scattering effect in solid, liquid and gas, which is called "Raman effect".

Teacher's summary: Raman had doubts about his explanation to the little boy. Later, it was found that the seawater scattered sunlight and appeared blue, thus discovering a ubiquitous light scattering effect. And therefore won the Nobel Prize in Physics. "Being India is also the first in Asian history" and "Honor" fully show the weight of Raman research results (paragraph 13).

(3) What do you think is the most important thing for Raman to achieve such research results? (Read the third part)

Never give up your curiosity about the "known". Maybe new discoveries are in the "unknown" within your "known" (paragraph l4). This paragraph is a summary of the full text.

Second, summarize the full text.

The story of a boy with infinite problems is actually a boy problem that arouses Raman's curiosity to pursue the unknown in the "known". It is the story of Raman's pursuit of the unknown to obtain a new "known". This story reflects a scientist's continuous pursuit of enterprising consciousness and exploration spirit.

Third, expand and extend.

Teacher: Do you want to know more about scientist Raman? Teachers and students introduce some related materials found before class. )

Five, homework design

1. Collect words and sentences.

2. Complete the self-test exercise.