资源简介

(共32张PPT)
沪教版 四年级
下
Unit 6 How do we measure time？
Period 4 Extend
Core competences
1.能认读、理解并说出sundial, hourglass, clock, watch等计时工具类词汇，能运用句型“It uses... to tell the time.”描述计时工具的工作原理，能复述语篇中计时工具的演变过程。
2. 了解人类计时工具的发展历史，感受科技进步对生活的影响，初步建立“合理规划时间、珍惜时间”的意识。
3. 能对比分析不同计时工具的优缺点，能根据生活场景思考合适的计时工具，培养逻辑思维和创新思维能力。
1
Lead in
导入环节
3
Practice
知识操练
5
Summary
课堂总结
2
Presentation
新知讲解
4
Production
输出运用
6
Homework
作业设计
01
Lead in
What is the video about
It’s about time.
Watch the video
01
Lead in
I can say
What time is it
It’s three o’clock.
01
Lead in
I can say
What time is it
It’s nine o’clock.
01
Lead in
I can say
What time is it
It’s six o’clock.
01
Lead in
I can say
What time is it
It’s eleven o’clock.
02
Presentation
Pre-reading
How people told the time long ago, from sundials to clocks
02
Presentation
Pre-reading
Task1:Look and answer .
1.Look at the pictures in the passage. What are these things
2. Which one do you think is the oldest
3.What will happen in the story
They are sundial, hourglass and clock.
They are different time tools.
No, they don’t. The sundial can’t work on cloudy or rainy days.
sundial “日暑”
hourglass “沙漏”
I think the sundial is the oldest way to tell the time.
02
Presentation
While-reading
Listen and answer.
This is a sundial.The sun makes a shadow on the sundial,and the shadow tells the time.But it cannot help us on a cloudy day.
This is an hourglass.The sand in it falls down.It can count down the time.
Can you tell the time without a clock In the past,we used different things to tell the time.
Later,people used clocks and watches to tell the time.We still use them today.
02
Presentation
While-reading：Skimming
1.Long ago，did people have clocks
2. What did people use to tell the time in the past
No, they didn’t.
They used different things.
tell the time “报时”
in the past “在过去”
02
Presentation
While-reading：Skimming
1.How does a sundial work
2. When can’t the sundial work
The sun makes a shadow.
It can’t work on cloudy or rainy days.
peel off “剥下”
cannot=can’t
This is a sundial.The sun makes a shadow on the sundial,and the shadow tells the time.But it cannot help us on a cloudy day.
help “帮助”→helpful “有帮助的”→helpless “没有帮助的”→help sb.(to)do sth.:“帮助某人做某事;”→help sb.with sth.“在某方面帮助某人”
cloudy“多云的”→on a cloudy day“在阴天”
02
Presentation
While-reading：Skimming
1.What is in the hourglass
2. How does the hourglass tell time
There is some sand in it.
The sand falls down slowly.
count down the time “倒计时”
falls down “掉下”
This is an hourglass.The sand in it falls down.It can count down the time.
02
Presentation
While-reading：Skimming
1.What do people use now
2. Why do we like clocks
People use clocks and watches.
They work anytime and anywhere.
watches “手表”
Later, people used clocks and watches to tell the time.We still use them today.
02
Presentation
While-reading：Look and review.
sundial
hourglass
clock
watch
02
Presentation
Listen and repeat
02
Presentation
Listen and repeat
This is a sundial.The sun makes a shadow on the sundial,and the shadow tells the time.But it cannot help us on a cloudy day.
This is an hourglass.The sand in it falls down.It can count down the time.
Can you tell the time without a clock In the past,we used different things to tell the time.
02
Presentation
Listen and repeat
Later,people used clocks and watches to tell the time.We still use them today.
Look!Why isthe bird singing What's it doing
It's telling the time.It sings every hour.
02
Presentation
Read all together
This is a sundial.The sun makes a shadow on the sundial,and the shadow tells the time.But it cannot help us on a cloudy day.
This is an hourglass.The sand in it falls down.It can count down the time.
Can you tell the time without a clock In the past,we used different things to tell the time.
02
Presentation
Later,people used clocks and watches to tell the time.We still use them today.
Look!Why isthe bird singing What's it doing
It's telling the time.It sings every hour.
Read all together
02
Presentation
Read all together
每个小组选择自己喜欢的方式朗读。
Read by yourself
自读
Read after one
一人领读
Read one by one
一人一句读
Read together
一起齐读
02
Presentation
Post-reading
What other things can you use to tell the time
03
Practice
Sharp eyes.
hourglass
keeping
sundial
shadow
falls down
03
Practice
Sharp eyes.
past
watches
cloudy day
cannot
count
03
Practice
How do we measure time
What do you know about time
What time is it in different places
What are people doing at the same time
What other tools can you use to tell the time
We can measure time in different ways.
People in different places may have different time.
They often do different things at the same moment.
We have many different tools to measure time, such as clocks, watches and hourglasses.
day
night
hour
minute
second
month
year
04
Production
Pair work
10:00 AM London
5:00 PM
Beijing
7:00 PM
Sydney
两人一组，合作完成。
It’s five o’clock in Beijing.
I am...
Act and say.
10:00 AM London
5:00 PM
Beijing
7:00 PM
Sydney
两人一组，合作完成。
It’s five o’clock.
You’re in Beijing.
05
Summary
Phrases
Sentences
in the past，sundial，hourglass，watches，count，shadow
It uses... to tell the time.
We can measure time in different ways.
What have we learned from this class
Keeping up with time
06
Homework
1. Read the text
on P60.
1
3. Show your dialogue
to the class next time!
3
2. Make a short “time dialogue”poster with your partner.
2
4.Finish the exercises and the survey.
4
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