"Frontier of the Universe" PPT courseware

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"Frontier of the Universe" PPT courseware

Part 1: Importing new lessons

In the summer night sky, stars are twinkling, and meteors suddenly appear brilliantly, then disappear quickly and are submerged in the vast universe. The universe is vast and mysterious, which has attracted humans since ancient times, attracting humans to constantly explore its mysteries. Today, let us take a closer look at the exploration results of American scientist and popular science writer Carl Sartre - "The Frontier of the Universe".

The Frontier of the Universe PPT, Part 2: Introduction to the Author

Carl Sagan (1934-1996), an American, was the director of the Center for Planetary Research at Cornell University and was known as a "popular astronomer" and "public scientist". With his enthusiasm for science and his huge personal influence, he has guided generations of young people on the path of exploring science. He played an important role in sending unmanned spacecraft into space, and also made many achievements in planetary science, the origin of life, and the exploration of extraterrestrial intelligence. He has hosted TV science programs and published a large number of popular science articles and books. His "Dragons of Eden" won the Pulitzer Prize, and the TV series "Cosmos" has received enthusiastic responses around the world. His major works include "Cosmic Connection" and "Universe".

The Frontier of the Universe PPT, the third part: the stylistic characteristics of the commentary

The text is the commentary of a TV film and has the following characteristics:

(1) The commentary should have a clear theme and focus of explanation based on the characteristics of the explanation object. It should not be exhaustive. It should highlight the main aspects of the thing and grasp the key of the thing. Even if it is an expanded content, it should not stray from the theme of the explanation. If the object of the text explanation is the universe, then the introduction must be based on the composition of the universe, and other questions cannot be randomly raised.

(2) The commentary supplements and increases the relevant information of the explanation object, mainly to expand knowledge and emotions, allowing readers to accept the meaning that the pictures and objects themselves cannot convey and are difficult to express. For example, the text introduces the basic concept of light years (knowledge expansion) and compares the universe to the sea, stimulating readers' imagination of the universe (emotional expansion).

(3) The commentary is an organic whole, but each part is relatively independent. The text ranges from the universe as a whole to the composition of galaxies to the solar system. Each part is closely connected, but each has its own emphasis and center.

The Frontier of the Universe PPT, Part 4: Overall Perception

1. The order of explanation in this article

The commentary has a certain visual quality, and slowly advances as the camera lens changes from large-scale space to small-scale space. As far as our reading is concerned, the text has been separated from the visual images of the TV (you can also feel the influence of the TV images on the text, such as introductory words such as "We are now back in our backyard"), and it has become an independent article, starting from the order of explanation. As you can see, the spatial order is adopted:

Universe → Galaxy (Galaxy Group, Sub-Galaxy) → Star → Solar System → Planet

2. The advantage of this order of explanation is:

(1) Although we live in the universe, we jump out of the universe and explain it as a purely objective explanation object, so that we can introduce it more clearly and intuitively.

(2) The spatial scale goes from large to small, allowing readers to understand the whole, and then go into details to understand the details. This way, the order is clear, the levels are clear, and it is in line with the readers' thinking habits.

(3) From the vast universe, through endless space, to finally returning to the home of mankind, this is a process of exploration and discovery, which reflects mankind's admiration for the universe and enthusiasm for "controlling our own destiny." "The future of mankind depends on how well we understand the universe." Looking back from the universe to the earth is the future of mankind. The order of explanation is consistent with the author's thoughts.

3. According to the order of explanation, the article is divided into five parts:

1. (1-6) The first part introduces the universe and explains the significance of human exploration of the universe;

2. (7-11) The second part introduces galaxies;

3. (12-14) The third part introduces stars;

4. (15-16) The fourth part introduces the planets and solar system;

5. (17-18) Finally return to the homeland of mankind.

The Frontier of the Universe PPT, Part 5: Problem Exploration

1. This article uses a lot of discussion and lyricism. What is its role?

The text supplements a lot of relevant knowledge, but what is more prominent is the author's expression of his own thoughts and feelings, including large sections of discussion and emotion. For example, the three paragraphs at the beginning and the two paragraphs at the end have strong argumentative and lyrical colors, integrating reasoning and lyricism, and they naturally match the explanatory text, conveying the author's understanding of the universe and human beings. The discussion and lyricism in the passage can also be seen everywhere, such as "If we are randomly placed in the universe, the chance of us attaching or falling on a planet is only one in 1033. In daily life, such a chance is' "Enviable". This shows how precious celestial bodies are" etc.

Lyrical. Lyrical means expressing and expressing the author's feelings.

talk. Argument means that the author expresses his opinions on a certain object of discussion to express his own views and attitudes.

Its function is to make the article clear, profound, and have strong philosophical and theoretical depth.

2. Humanity's understanding of the universe began on the earth. Why doesn't the author's explanation follow the trajectory of the development of human understanding?

Of course, it is not a bad idea to introduce it based on the history of human understanding of the universe.

The order of introduction of the text is in line with the law of the evolution of the universe. First there is the universe, then there are galaxies, then stars, and then planets. This introduction facilitates the sorting out of knowledge. Secondly, this is the commentary of the TV movie, from the perspective of photography. It seems that first the whole and then the parts are easier to grasp, but first the parts and then the whole, the expression is easy to be confused, and the visual picture is not easy to coordinate.

3. What does the author know about the universe?

The universe is vast and mysterious. The earth where humans live is just a drop in the ocean of the universe, "its existence may only be meaningful to us." The universe does not exist because of the earth and the humans living on it, but the future of mankind depends on our understanding of the universe.

4. What does the author know about human beings?

Human beings are insignificant in the universe, "just a speck of dust flying in the morning window"; most of the issues that human beings care about are insignificant and meaningless to the universe; but human beings are brave and glorious. , they use their small bodies to explore the vast universe, and human beings develop the greatness of the universe in their smallness.

The Frontier of the Universe PPT, Part Six: Writing Characteristics

(1) Make good use of metaphors

Comparing the entire universe to the sea, and comparing the surface of the earth to the "cosmic ocean shore" is vivid and can better reflect the boundlessness of the universe. Compare our exploration of the universe to "wading into" the ocean. Comparing people on earth to dust and so on.

(2) Clever use of personification

"The sea water is charming, and the sea is calling to us." The word "call" is used to vividly express our yearning for the universe. The sea is like a mother calling her children to understand her more deeply.

(3) Pen with passion

The language of the article is full of emotion and literary. For example, "Just thinking about the universe... is as dizzying and shuddering as recalling a cliff slip a long time ago." Use "dizzy and trembling" to describe people's excitement when facing the many mysteries of the universe.

(4) The language contains philosophy

The author uses some classic language and is philosophical. For example, "Curiosity is human nature, understanding is a pleasure, and knowledge is a prerequisite for survival." Beautiful and vivid language explains profound and abstract scientific knowledge in an easy-to-understand, concrete and interesting way.

The Frontier of the Universe PPT, part 7: Insights on the theme

Through the explanation of many pictures of the universe, the full text shows us the mysteries of the universe, the physical characteristics of celestial bodies and the rewards of traveling in space. It arouses people's interest in universe exploration and inspires the courage and fighting spirit to dedicate themselves to universe science and benefit mankind.

Writing reference

The plain explanation is extremely scientifically accurate. This article uses numerical illustrations in almost every description of celestial space. Otherwise, people will be confused about the characteristics of celestial bodies.

Vivid descriptions enhance the readability of the article. A large number of metaphors vividly present unimaginable scenes of the universe to readers, enhancing the readability of the expository text.

The writing of this article has great jumps, but the whole article is very layered. This is the biggest feature of TV commentary. It must change the content of the description at any time with the TV screen.

Keywords: Free download of PPT courseware for the three compulsory high school Chinese courses of the People's Education Press, PPT download of the Frontier of the Universe, .PPT format;

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"The Frontier of the Universe" PPT Part One Content: New Lesson Reading Aid This article is excerpted from Carl Sagan's "The Universe". It is a popular science explanatory article about the exploration of the universe, and it is also a commentary for a large-scale TV film. The author shows people...

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Update Time: 2024-07-30

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