资源简介

(共52张PPT)
沪教版 四年级
下
Unit 7 How do things change？
Period 2 Explore
Core competences
1.能听懂、认读并说出核心词汇（freezer, ice cream, cream, sugar, salt, mix, shake, add）和句型“Let's... / Shall we... / I can teach you. / What shall we do ”；能在情境中运用核心句型提出提议、发出指令、回应他人，能读懂语篇并梳理自制冰淇淋的步骤。
2.通过理解故事的因果逻辑，能分析“冰淇淋融化”和“成功制作”的原因；体会合作解决问题的乐趣，感受科学与生活的联系，培养积极面对问题、动手探究的意识。
3.能借助插图、上下文理解语篇内容，通过小组合作梳理制作步骤；能在教师引导下完成听、说、读、练活动，初步形成用英语交流生活场景、表达想法的能力。
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
Words game
Click the birds and read the words.
01
Lead in
liquid
gas
cream
solid
salt
sugar
melt
01
Lead in
Think
Look！What happened to the ice cream？
Hot
Sun
...
01
Presentation
Think
Today,the students in our book also have a problem with ice cream.Let’s see what happened at their school party!
Let's find out in the story!
02
Presentation
Pre-reading
02
Presentation
Pre-reading
1.Look and answer
1. Who are they
2. Look at the picture. The ice cream is melting! What happened Can you guess why
3. The students have no ice cream for the party. What can they do to get new ice cream
02
Presentation
Pre-reading
1. Who are they
1.Look and answer
Mr Gao
Science teacher
Mrs Tan
Grade 4 teacher
Lu Hang
Jia Li
Ma Tao
Students
02
Presentation
Pre-reading
2. Look at the picture. The ice cream is melting! What happened Can you guess why
It's too hot. / The sun is shining on it. / The freezer door is open.
1.Look and answer
02
Presentation
Pre-reading
3. The students have no ice cream for the party. What can they do to get new ice cream
They can buy some new ice cream. / They can make ice cream by themselves.
1.Look and answer
02
Presentation
While-reading：Skimming
Mrs Tan: Today is our school party.
Let’s get the ice cream.
It’s in the freezer.
Lu Hang: Oh no! The freezer door
is open.
Jia Li: Look at the ice cream!
Mrs Tan: Now there’s no ice cream
for the party.
冰柜freezer→复数freezers→冰柜门freezer door→冰冻(v.)freeze
02
Presentation
While-reading：Skimming
Mr Gao: Shall we make some more
Students: Sure! But how
Mr Gao: Don’t worry! I can teach you.
Students: Great!
Mr Gao: OK, kids. Get some big and small plastic bags.
Then come to the classroom.
Shall提建议的句型：(语气委婉征求意见）
Shall we+动词原形...
肯定回应：Sure!/OK./Good idea!Students:Great!
拒绝：Sorry,……
祈使句：动词原形开头，省略主语，表达祈求、命令、建议等。→祈使句否定：Don't+动词原形→别担心Don't worry!
02
Presentation
While-reading：Skimming
Mr Gao: I have ice. I have cream,sugar and salt
Ma Tao :Whot shall we do
Mr Gao:Mix the sugar and cream.Then put the mixture in a small bog.
Students:Done!
Mrs Tan: Let's add some chocolate.
Students: Good idea!
Mr Gao: Look! I'm putting salt and ice in the big bag.I’m putting the small bag in it too.Now shake,shake, shake!
Ma Tao: The ice is freezing the mixture!
Jia Li: Look!We have ice cream!
mix→混合物mixture→把A和B混合：mix A and B
主意/想法：idea(元音发音开头)一个主意：an idea一个好主意a good idea
放put→单三puts→ing:putting
put...in.“把…放入…里”→把盐放进袋子put salt in the bagput on“穿上”→穿上衣服put on clothes→
put on“上演”→上演戏剧put on a play
02
Presentation
While-reading：Skimming
1.What materials does Mr Gao have for making ice cream
2.What do the students do first with sugar and cream
He has ice, cream, sugar and salt.
They mix the sugar and cream together.
Mr Gao: I have ice. I have cream,sugar and salt
Ma Tao :Whot shall we do
Mr Gao:Mix the sugar and cream.Then put the mixture in a small bog.
Students:Done!
Mrs Tan: Let's add some chocolate.
Students: Good idea!
Mr Gao: Look! I'm putting salt and ice in the big bag.I’m putting the small bag in it too.Now shake,shake, shake!
Ma Tao: The ice is freezing the mixture!
Jia Li: Look!We have ice cream!
02
Presentation
While-reading：Skimming
3. Why do they shake the big bag
To make the ice colder and freeze the mixture into ice cream.
Mr Gao: I have ice. I have cream,sugar and salt
Ma Tao :Whot shall we do
Mr Gao:Mix the sugar and cream.Then put the mixture in a small bog.
Students:Done!
Mrs Tan: Let's add some chocolate.
Students: Good idea!
Mr Gao: Look! I'm putting salt and ice in the big bag.I’m putting the small bag in it too.Now shake,shake, shake!
Ma Tao: The ice is freezing the mixture!
Jia Li: Look!We have ice cream!
02
Presentation
While-reading：Skimming
Mr Gao: How's the ice cream, kids
Students: It's great! Can we have some more
1.How do the students like the homemade ice cream
It's great! They love it.
一些some(常用于肯定句)+可数名词复数/不可数名词
一些any(常用于否定句/疑问句)+可数名词复数/不可数名词
02
Presentation
Listen and repeat
02
Presentation
Listen and repeat
Let’s make ice cream!
Mrs Tan: Today is our school party.
Let’s get the ice cream.
It’s in the freezer.
Lu Hang: Oh no! The freezer door
is open.
Jia Li: Look at the ice cream!
Mrs Tan: Now there’s no ice cream
for the party.
Mr Gao: Shall we make some more
Students: Sure! But how
Mr Gao: Don’t worry! I can teach you.
Students: Great!
Mr Gao: OK, kids. Get some big and small plastic bags.
Then come to the classroom.
02
Presentation
Listen and repeat
Mr Gao: I have ice. I have cream,sugar and salt
Ma Tao :Whot shall we do
Mr Gao:Mix the sugar and cream.Then put the mixture in a small bog.
Students:Done!
Mrs Tan: Let's add some chocolate.
Students: Good idea!
Mr Gao: Look! I'm putting salt and ice in the big bag.I’m putting the small bag in it too.Now shake,shake, shake!
Ma Tao: The ice is freezing the mixture!
Jia Li: Look! We have ice cream!
02
Presentation
Listen and repeat
Mr Gao: How's the ice cream, kids
Students: It's great! Can we have some more
02
Presentation
Read all together
Let’s make ice cream!
Mrs Tan: Today is our school party.
Let’s get the ice cream.
It’s in the freezer.
Lu Hang: Oh no! The freezer door
is open.
Jia Li: Look at the ice cream!
Mrs Tan: Now there’s no ice cream
for the party.
Mr Gao: Shall we make some more
Students: Sure! But how
Mr Gao: Don’t worry! I can teach you.
Students: Great!
Mr Gao: OK, kids. Get some big and small plastic bags.
Then come to the classroom.
02
Presentation
Read all together
Mr Gao: I have ice. I have cream,sugar and salt
Ma Tao :Whot shall we do
Mr Gao:Mix the sugar and cream.Then put the mixture in a small bog.
Students:Done!
Mrs Tan: Let's add some chocolate.
Students: Good idea!
Mr Gao: Look! I'm putting salt and ice in the big bag.I’m putting the small bag in it too.Now shake,shake, shake!
Ma Tao: The ice is freezing the mixture!
Jia Li: Look!We have ice cream!
02
Presentation
Read all together
Mr Gao: How's the ice cream, kids
Students: It's great! Can we havesome more
02
Presentation
Post-reading：Think
How do the students make ice cream
Put the mixture in a small bag.
A
Mix the sugar and cream.
Put salt and ice in the big bag. Put the small bag in it too.
Shake the bags.
B
C
D
B
A
C
D
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：Think and read
fr
fresh
fruit
freeze
freezer
frozen
02
Presentation
Post-reading：Think and read
fr
frog
from
Friday
friend
02
Presentation
Post-reading：Listen, follow and read.
Let’s put fruit juice in the freezer
To make a frozen treat!
The fruit juice gets so cold.
It freezes into ice.
It turns into a lolly.
That really tastes nice.
02
Presentation
Post-reading：Read and compare.
fl or fr
frog
flower
fruit
freezer
02
Presentation
Post-reading：Watch
02
Practice
What are the cause and effect
Cause
Effect
A cause is why something happens.
The effect is what happens after the cause.
Read and match.
02
Practice
Read and match.
Cause
Effect
The freezer door is open.
so
The ice cream melts.
The teachers help
the students.
The students can make ice cream.
The teacher puts the small bag
of mixture in the big bag.
The mixture freezes.
03
Practice
Read again and talk
What do the students use to make ice cream
sugar salt cream ice chocolate strawberries ...
The students use ... to make ice cream.
√
√
√
√
√
03
Practice
Read again and talk
sugar salt cream ice chocolate strawberries ...
√
√
√
√
√
What do the students
use to make ice cream
They use ice,cream.sugar,and salt.They also use some small and big plastic bags.
03
Practice
Read and answer.
What is the mixture in the chant
How do they make the mixture
03
Practice
Listen and chant.
Let’s make chicken soup!
03
Practice
Read again and answer.
How can you invite a friend to make chicken soup with you
03
Practice
Look and read.
3.常用回应
Sure!（当然！）OK.（好的。）
Great！（太棒了！）Good idea!（好主意！）
1.Shall we+动词原形..？
用法：用于礼貌地向对方提出建议，邀请一起做某事。
例句：Shall we wash some carrots
中文：我们来洗一些胡萝卜好吗？
2.Let's+动词原形..
用法：Let's是Let us的缩写，直接提出建议，表示“让我们一起..吧”。
例句：Let's make some soup.
中文：我们来做些汤吧。
4.例句
Shall we cut the vegetables → Sure!
Let's cook the soup. → OK.
03
Practice
Look and talk.
ice cream
chicken soup
orange juice
salad
Let’s make some ...
OK.
03
Practice
Think and say.
Shall we ...
Sure.
How can you make chicken soup
wash the pot
wash the chicken
wash the carrots
put the chicken
in the pot
add some carrots
add some salt
03
Practice
Look and say.
Shall we ... /Let’s ...
Sure./OK.
How can you make vegetable soup
wash the ...
wash the ...
put the ... in the pot
add some ...
03
Practice
Look think and talk
What are these pictures showing
orange juice
ice water
tomatoes with sugar
03
Practice
Look think and talk
Which picture are they talking about
03
Practice
Look think and talk
Which picture are they talking about
I’m hungry.Let's make some vegetable salad.
Shall we cut the tomatoes and add some sugar
Good idea!
03
Practice
Look think and talk
Which picture are they talking about
I’m hot.Let's make cold water.
Shall we add some ice first
Sure!
04
Production
Talk：How can we make things change
When we ..., ... changes into ...
05
Summary
Phrases
Sentences
freezer, ice cream, cream, sugar, salt, mix, shake, add
Let's... / Shall we... / I can teach you. / What shall we do
Let’s make ice cream!
06
Homework
Write about a change
英文要求：Write a short passage about how butter changes when you heat it. Use the sentence pattern “When we ..., ... changes into ...”.
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