内容正文:
英语
七年级 上册
Objectives & Tasks
Getting ready
Reading and critical thinking
Grammaring
Listening, viewing and speaking
Writing
Project
Self-assessment
Key words & Cool things to know
Contents
Global warming
7
Unit
Objectives & Tasks
Getting ready
Reading and critical thinking
Grammaring
Listening, viewing and speaking
Writing
Project
Self-assessment
Key words & Cool things to know
Contents
Objectives & Tasks
Getting ready
Reading and critical thinking
Grammaring
Listening, viewing and speaking
Writing
Project
Self-assessment
Key words & Cool things to know
Contents
can describe the cause and
effect of global warming
Objectives
Tasks
can find out the effect of
global warming
learn new words about global warming
practise the pronunciation of /tr/ /dr/ /l/ /r/ /w/ /ə/ /U/ sounds and word stress
use the present perfect tense correctly
read a blog post about the effect of global warming on an animal
listen to a weather report
learn about how a group of students deals with a climate problem
Objectives & Tasks
Objectives
can communicate about how global warming changes our world
Tasks
can express our ideas on taking climate action by using should
talk about the effect of global warming on our daily life
do an experiment to model the greenhouse effect
write an open letter on reducing our carbon footprint
Objectives & Tasks
How does global warming change our world?
Task: Do an experiment to model the greenhouse effect. Present the steps and results of the experiment with pictures and an explanation.
Greenhouse effect experiment
Question What is the greenhouse effect?
Materials Two cups, soil, two thermometers, a glass jar
Place Outdoor area
(Answers may vary.)
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Task
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Greenhouse effect experiment
Procedure 1. Prepare two cups filled with soil, mark A and B on the cups.
2. Stick the thermometers in cup A and cup B.
3. Put the two cups in the sunlight for 10 minutes and record the temperatures in the two cups in A1 and B1.
4. Place the glass jar upside down over cup A for 10 minutes and record the temperatures in A2 and B2.
5. Compare the temperatures in cup A and cup B.
The temperature in
Step 3 The temperature in
Step 4
Cup A A1: 28°C A2: 31°C
Cup B B1: 28°C B2: 29°C
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Task
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Greenhouse effect experiment
Finding A1 is the same as B1. A2 is two degrees higher than B2.
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Task
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Study the report to find out how the experiment models the greenhouse effect.
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Work in groups. Choose the following materials you need to do this experiment. What else do you need?
e.g. We need a thermometer to measure the temperature.
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Write down the steps of the experiment and discuss what
results to record.
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Do the experiment with your group members.
TEEN SKILL
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Observe the experiment and record the results.
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Report your experiment to the class.
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How well I can do these
A. identify the cause-effect relationship in different texts
B. explain the effect of global warming on our world
C. give a few pieces of advice on reducing our carbon footprint
D. understand the meaning of the Twenty-Four Solar Terms
E. use details such as numbers and expert opinions to give strong reasons
F. work together with others to do an experiment
Self-assessment
Causes of global warming
Effects of global warming
Causes of global warming
Add more! What other useful words or cool things have you learned? Add them to the lists.
burn
fuel
human activity
electricity
gas
oil
energy
greenhouse effect
at risk
homeless
rise
dry out
lose lives
salty
extreme weather
make sth difficult
sea level
heat up
melt
temperature
carbon footprint
ride a bike
clean energy
save
reduce
turn off/down
recycle
Key words to use
Cool things to know
the greenhouse
effect experiment
Add more! What other useful words or cool things have you learned? Add them to the lists.
Key words to use
Cool things to know
感谢您的耐心观看
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