"Nanotechnology is all around us" PPT (Lesson 2)

Description

"Nanotechnology is all around us" PPT (Lesson 2)

Part One: Learning Objectives

1. Understand the uses of nanometers and cultivate the spirit of loving and studying science. (emphasis)

2. Experience the method of introducing scientific knowledge in simple and easy-to-understand terms. (difficulty)

What is Nano? What is nanotechnology?

A nanometer is a very small unit of length, 1 nanometer is equal to one billionth of a meter.

Nanotechnology is a science that studies and utilizes the characteristics of these substances between 1 nanometer and 100 nanometers to benefit mankind.

Nanotechnology is around us PPT, part 2: text analysis

Read paragraphs 3-4 of the text aloud and think about it: From what aspects does the author introduce nanotechnology to us?

Two aspects:

1. Nanotechnology is all around us.

2. Nanotechnology can make people healthier.

Nanotechnology is all around us.

The central sentence of the second natural paragraph

If a nano-coating is used in the refrigerator, it will have sterilization and deodorization functions, which can extend the shelf life of food and vegetables.

Use examples to illustrate.

There is a magical material called "carbon nanotubes" that is a hundred times stronger than steel and very light. In the future, we may be able to travel to space on the "carbon nanotube ladder".

Use examples and comparison methods of explanation.

On the most advanced stealth fighters, a nano-wave-absorbing material is used that can absorb detection radar waves, so the radar cannot see it at all.

Use examples to illustrate.

Nanotechnology can make people healthier.

The central sentence of the third natural paragraph

Using extremely sensitive nano-detection technology, early detection and prevention of diseases can be achieved.

Use examples to illustrate.

Nanotechnology is around us PPT, the third part: summarize the main idea

This article is a short piece of popular science knowledge. It introduces high-tech nanotechnology. It is around us and is used in various other aspects, such as materials science, medicine, etc. Nanotechnology can change our daily necessities, food, housing, and transportation, and allow us to perceive The magic of nanotechnology and the magic of science.

Science essay

Scientific essays are also called knowledge essays or literary expository essays. It uses the style of a short essay, that is, with the help of certain literary writing techniques, to express the scientific content vividly and vividly. Often use some explanation methods, such as listing numbers, defining definitions, making analogies, giving examples, making comparisons, etc. Features: Generally short and concise, easy to understand, rich in language, and lively in form.

Nanotechnology is around us PPT, Part 4: Classroom exercises

1. Choose the correct word to fill in the blank.

build ( ) build ( ) whole ( ) build ( ) body

Talent ( ) Hua ( ) Materials Construction ( ) Gang ( )

Box Xiang ( ) Jiang Mu ( ) ( ) Xi ( ) Zi

Sick ( )Sick ( ) Fly ( ) Busy ( ) Hurry

2. What explanation method is used in the following sentences?

1. The sun is a big fireball. ( )

2. Nano is a very small unit of length, 1 nanometer is equal to one billionth of a meter. ( )

3. The diameter of dust particles is generally between one ten thousandth and one hundredth of a millimeter. ( )

4. Future nanorobots may be able to reach lesions directly through blood vessels and kill cancer cells. ( )

3. Choose the correct answer as required. (Multiple choice questions)

1. Choose the following idioms that have the same structure as "ever changes with each passing day". ( )

A. Boast B. Shine brilliantly C. Travel across the ocean D. Feel complacent

E. Like the new and dislike the old F. Walk around the streets G. Be focused and thoughtful H. There is no day like the same

2. What examples of nanomaterial applications does the article list? ( )

A. Deodorization B. Cleaning C. Sterilization D. Prevent fire E. Absorb waves F. Generate static electricity

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"Nanotechnology is all around us" PPT (Lesson 1):

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"Nanotechnology is all around us" PPT courseware:

The first part of the PPT courseware "Nanotechnology is Around Us": First Reading Perception Writer's business card: Liu Zhongfan, born in October 1962, native of Jiutai, Jilin, physical chemist, doctoral tutor of Peking University, academician of the Chinese Academy of Sciences, developing country Academician of the Academy of Sciences...

"Nanotechnology is all around us" PPT (second lesson):

"Nanotechnology is Around Us" PPT (second lesson) Part One: Learning Objectives 1. Read the text emotionally and understand the main content of the text. 2. Ask questions that you don’t understand and discuss them with classmates to solve them. (Key points) 3. Understand the magic of nanotechnology and cultivate...

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Update Time: 2024-11-04

This template belongs to Chinese courseware People's Education Press fourth grade Chinese language volume 2 industry PPT template

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