"The Destruction of the Rainforest—A Worldwide Disaster" PPT Courseware 3

Description

"The Destruction of the Rainforest—A Worldwide Disaster" PPT Courseware 3

teaching objectives

1. Fully understand the important position of "rainforest" in the ecological environment and enhance students' environmental awareness.

2. Master the explanation methods such as listing data, making comparisons, and giving examples used in the text.

3. Improve students’ interest and ability in reading popular science articles.

Rainforest is a type of forest in tropical or subtropical humid areas. It consists of tall evergreen broad-leaved forests that form a dense canopy with a multi-layered structure and contains abundant woody vines and epiphytic higher plants. It includes tropical rainforests, subtropical rainforests, and mountain rainforests.

Rainforest distribution

“This land is the vast, natural, messy and lush greenhouse that nature has created for itself.”

Darwin first saw the tropical rainforest more than 150 years ago. The tropical rainforest has breathtaking scenery, almost endless sounds and smells, and exploring the tropical rainforest is like entering a strange, mysterious planet.

1. Perception of the full text

Quickly read the entire text to accumulate words and think about it

1. What is the current status of the rainforest?

2. What kind of disaster will the disappearance of rainforest bring to mankind?

Answer the following questions:

1. What is the current situation of the rainforest?

Currently, the rainforest is suffering from indiscriminate deforestation by humans, and it has become the most severely damaged ecological area. The first paragraph of the article tells us: “The rainforest is completely destroyed at a rate of 270,000 square meters per minute. Every year, a rainforest the size of New York State disappears forever.

2. What kind of disaster will the disappearance of rainforest bring to mankind?

The rainforest is like a huge home of diverse organisms. The disappearance of the rainforest means that people will lose a large number of species forever; it means that the atmosphere on which people live will be severely damaged, which will exacerbate the trend of global warming; the disappearance of the rainforest will also lead to soil erosion and flooding; if If the rainforests are completely destroyed, the Earth will likely experience the sixth mass extinction by the middle of the next century.

2. Clarify your thoughts

The idea of ​​the article:

Because 1, (paragraph 1) the rainforest is being completely destroyed at a rate of 270,000 square meters per minute.

Fate 2, (paragraph 2-5) The disappearance of the rainforest means that humans will lose a large number of species

Fruit 3, (paragraphs 6-10) The destruction of the diversity of life on earth means the destruction of the atmosphere on which people rely for survival.

Fruit 4, (paragraphs 11-13) If the rainforest is completely destroyed, the earth may experience the sixth mass extinction by the middle of the next century.

Language of taste:

Can the red words be removed from the following sentences? Why?

1. At least 2,500 potential new fruits and vegetables are growing in tropical rainforests around the world.

cannot. "At least" means there are at least 2,500 potential new fruits and vegetables growing in tropical rainforests around the world. The actual number will be more than 2,500. This shows that plants in tropical rainforests are valuable resources for humans to obtain more food.

2. The most severe one occurred about 245 million years ago in the Permian.

cannot. "Approximately" indicates an estimated number, not very precise, indicating a high probability. Once removed, the accuracy of the description is lost.

3. We have lost forever the Darwinian moth, which had a tongue more than 20 centimeters long and was capable of sucking sap from a special species of orchid.

cannot. "Forever" indicates that this species has become extinct, and also implies the author's regret and helplessness about the extinction of the species.

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For more information about the PPT courseware "A Worldwide Disaster Destroying the Rainforest", please click the "A Worldwide Disaster Destroying the Rainforest" ppt tag.

"The Destruction of the Rainforest—A Worldwide Disaster" PPT Courseware 2:

"The Worldwide Disaster of Rainforest Destruction" PPT Courseware 2 Teaching Objectives 1. Fully understand the important position of the rainforest in the ecological environment and enhance students' environmental awareness. 2. Master the explanation methods such as listing data, making comparisons, and giving examples used in the text. 3. Improve students’ reading...

"The Destruction of the Rainforest—A Worldwide Disaster" PPT courseware:

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Update Time: 2024-11-22

This template belongs to Chinese courseware Chinese version of eighth grade Chinese language volume 1 industry PPT template

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