Unit 3 Environmental Protection 课件（共16张）-2025-2026学年人教版（2019）选择性必修第三册

(共16张PPT)
Unit 3 Environmental Protection
Reading and Thinking
Lead-in
Look at the photo and discuss.
What can you see in the photo
What’s the main reason of the phenomenon
A large piece of ice is breaking off a glacier.
global warming/climate change
What is the graph about What information can you get from it
Describe & Predict
Look at the graph and describe it.
The earth is becoming warmer and warmer.
Climate change requires the world’s attention
CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTION
2. What is the author’s purpose of writing this text
To inform the reader and inspire them to do whatever they can to deal with the climate change.
Look at the title and predict what the text is about.
1. What information does the author want to convey
Serious environmental problem……
Read for main idea
Divide the passage into some parts, then match the main idea with each part.
Part 1
B. The consequences of the rise in temperature
A. The solutions to reducing greenhouse gas emissions
D. The cause of the increase in the global temperature
Part 2
Part 3
Part 4
para.1-2
C. The evidence of dramatic climate change that had an impact on Earth’s ecology
para.3
para.4
para.5
What is the text type of this passage
Argumentation
Narration
Exposition
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Exposition conveys information, explores ideas, or provides analysis in a clear and objective manner, relying on evidence, facts, and examples to inform and enlighten the audience.
Read for main idea
Read for details
evidence
a warming ocean and atmosphere
rising sea levels
melting ice
Read para.1-2 and fill in the mind map.
a dead polar bear
A problem
What
Earth is getting warmer and warmer.
Read para.2 and find out reasons account for the death of the polar bear in the flow chart.
What is the root cause
climate change
low sea-ice levels
lack of
food
longer food-seeking travel
starvation
Read for details
Read para.3 and create a diagram describing how the greenhouse effect works.
Earth
atmosphere
sunlight
reflected sunlight
heat released back into space
heat reflected back to Earth’s surface
Read for details
Why is the “natural” greenhouse effect important and necessary
What’s the cause of the increase in the global temperature
greenhouse effect
It keeps Earth’s climate warm and habitable.
Read para.4 and finish the mind map.
What’s the consequences of global temperature rise
The rise in temperature
leads to
extreme weather/ natural disaster
extreme rainstorm;
heat waves
serious damage;
costing human lives;
economic loss
examples
results
Read for details
restrict the amount of carbon dioxide produced in daily life
……
Read para.5, finish the mind map.
solutions
governments
individuals
make policies
take actions and measures
Read for details
Discuss the question and propose some solutions.
As an individual, What can we do to deal with climate change
Work in pair
use renewable energies
take green transportation
stop using plastic bags
make a poster
Group discussion
Who do you think should take the responsibility for dealing with climate change And why
Work in group and discuss on the following question .
Who
(government/ industrial companies/ individual……)
Reason
(The main reason is that……/ We are all the member of nature……)
Assessment chart
Criteria Self-assessment Peer-assessment Teacher-assessment
Excellent=5 Very good=4 Good=3 Need improvement=2 Unsatisfied=1
Logical language
Rich content
Fluent expression
Accurate grammar
Total
Assignment
Option 1: Prepare a speech according to the given situation.
Option 2: Make a poster for the Earth Day.
The poster had better be divided into different sections, like problems and solutions. You are expected to use some diagrams, graphs and pictures.
You are invited to give a speech with the theme of environmental protection in Youth Forum. Please prepare your speech from the following aspects:
problems; (2) causes; (3) solutions.
Notice:
No less than 100 words;
No real names of yourself and school.
Thank You!