内容正文:
Amazing
Amazing
numbers
numbers
Unit 2
Lesson4 Writing
英语沪教版八年级上册
1.掌握解读折线图的数据和信息的方法以及折线图的绘制方法,绘制折线图,撰写人口变化数据报告。
Learning objectives
2. 初步形成“用数据说话”的意识; 感受全球人口变化对地球环境带来的挑战,树立生态保护意识。
重点
重点
Look and say
What graph types do you know?
line graph
column chart
table
pie chart
Look and learn
Today’s task:
Look and learn
①
②
Growing numbers: rise (sharply, quickly, slowly), grow, go up, double
② Falling numbers: fall (sharply, quickly, slowly), drop, go down
③ No change: stay the same, remain the same
Year
World population:1750-2050
Population (billion)
③
Look and complete
Wang Yao is writing a report about the world population. Look at the line graph she found and help her complete the report.
Look and complete
World population
The graph shows that the population in the world (1)______________ before the year 1800. During the second half of the 1800s, the population began (2)____________. In 1850, there were about (3)___________ people in the world. About one hundred years later, the world population reached (4)_____________. Between 1950 and 2000, the population more than (5)____________. In 2050, there will be more than (6)___________people on our planet.
grew slowly
to grow quickly
one billion
2.5 billion
doubled
9 billion
Look and answer
Look at the graph and answer the following questions.
1. What’s the line graph about?
The world population from 1750 to 2050.
2. What does the vertical axis (纵轴) stand for?
The population.
3. What does the horizontal axis (横轴) stand for?
The year.
4. What was the population in 1850?
It was about 1.2 billion.
5. What was the population in 2000?
It was about 6 billion.
Learn more expressions
1.说明数据值
2.说明数据变化趋势
3.说明数据差值
There be +数字
The number of ... is/ was ...
The number of .... rises/ falls to .... 数值增加到/减少到
The number of ... rises/ falls from... to... 数值从.....增加到/减少到
The number of ... rises / falls by... 数值增加了/减少了…
Learn more expressions
rise / grow / go up 表示上升
fall / drop / go down 表示下降
rise to / increase to / go up to 上升到/ 升至+(上升结果)
fall to / decrease to / go down to 下降到/降至+(下降结果)
rise by / increase by / go up by 上升了+(上升幅度)
fall by / decrease by / go down by 下降了+(下降幅度)
rise from... to... 从......升至......
fall from... to... 从......降至......
Learn and summarize
How to describe the line graph? Let’s learn more!
1. 说明图表展示的对象
The table / chart / diagram / graph shows (that) … 该图表显示……
The line graph shows the world
population from 1750 to 2050.
2. 介绍线形图总趋势(从开头到最后,上升还是下降)
As we can see, from 1950 to 2050,
the world population rose sharply.
Learn and summarize
How to describe the line graph? Let’s learn more!
3. 比较线形图的各个点的变化趋势(数据差值)
① In 1750, there were about 0.8 billion people in the world.
② In 1800, the number rose to about 1 billion and then increased to 1.2 billion in 1850.
Learn and summarize
How to describe the line graph? Let’s learn more!
4. 比较线形图的各个点的变化趋势(数据差值)
① In 1900, the population reached around 1.6 billion and then doubled to about 2.5 billion in 1950.
② Finally, it shot up to 6.1 billion in 2000 and is projected to (预计) reach 9 billion by 2050.
Read and think
How has the population in a particular city or province changed over the years? Find information about it and write a report.
Which city or province do you want to focus on?
How has its population changed over the years?
How has the population in a particular city or province changed over the years? Find information about it and write a report.
Choose a city or province you are interested in. Find information about its population change over a period of time and make a line graph.
Find and write
How has the population in a particular city or province changed over the years? Find information about it and write a report.
Find and write
Example
Write a report about how the population changed over time.
____________________________________________________________________________________________________________________________________________________________________________________________________________
Let’s write
Tick (√) the boxes to check your writing, and then revise it.
I used a line graph to record and present information, using correct numbers.
I provided a detailed description of how the population of a city /province changed over time.
I used the words and expressions I learnt in this unit.
I used correct spelling, grammar, and punctuation.
Check and revise
Share and evaluate
Content
Provide a detailed description of how the population of a city / province changed over time.
Use the words and expressions learned in this lesson.
Correct grammar and word spelling.
Structure
Organize the writing with a clear structure.
Language
Share your writing with your partners and give them feedback for further improvement.
Revise writing
Content
Provide a detailed description of how the population of a city / province changed over time.
Use the words and expressions learned in this lesson.
Correct grammar and word spelling.
Structure
Organize the writing with a clear structure.
Language
Revise your writing based on the feedback from your partner.
Think and discuss
Group discussion: How does the population change over recent years? What are the problems?
Population has grown a lot in recent years. More babies are born, and people live longer.
Problems:
Overcrowding: There are too many people in some places.
Fewer Resources: There isn’t enough food, water, or space for everyone.
Pollution: More people generate more waste and pollution.
Think and discuss
Group discussion: Can Earth provide enough clean water and healthy food for 8 or 9 billion people fairly? How?
Yes, the Earth can provide enough clean water and healthy food, but we need to manage it better.
How:
Use water wisely.
Grow food in smart ways.
Share resources fairly.
Summary
rise (sharply, quickly, slowly), grow, go up, double,
fall (sharply, quickly, slowly), drop, go down, stay the same, remain the same ......
The graph shows that ...
The population began ...
The world population reached ...
There were about ... people in the world.
plan — write — check and revise
Useful expressions
Sentence patterns
Steps to write report with numbers
Homework
Rewrite the report you drafted in class.
Collect data about the population changes in your city, and then draw a line graph and write a report about it.
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Bye
Bye
numbers
Bye
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