(共57张PPT)
沪教版 四年级
上
Unit 3 How do we use numbers
Period 2 Explore
Core competences
By the end of the lesson, I will be able to...
describe the quantity of items;
talk about the quantity of items;
用数字描述自己或者他人拥有物品的数量；
谈论人或者物品的位置;
master the sound of letter "e" in words.
掌握字母"e"在单词中的发音。
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
Look and say
equal
01
Lead in
Look and say
even numbers
01
Lead in
Look and say
plus
01
Lead in
Look and say
minus
01
Lead in
Look and say
odd numbers
Twelve plus three equals nine.
12 + 3 = 9
×
Read and judge
Read and judge
Fourteen plus two equals sixteen.
14 + 2 = 16
√
Fifteen minus six equals ten.
15 - 6 = 10
×
Read and judge
Read and judge
Ten minus five equals five.
10 - 5 = 5
√
02
Presentation
Look at the headings and guess what the text is about
I think the text is about numbers, plus and minus.
How do numbers help us count in our daily lives Let's read and say.
Listen and read
Look at the numbers. Some numbers are even, and some numbers are odd. The even numbers are blue, and the odd
numbers are red.
We use numbers every day. They help us count things.
Let's learn
every day
每天;天天
We use numbers every day.
I brush my teeth every day.
e.g. use water to clean hands 用水洗手
use pencil to write 用铅笔写字
Let's learn
use
使用
We use numbers every day.
use 表示"使用"可以与 to 搭配
Let's learn
help
帮助
They help us count things.
help 在文中是动词，表示“帮助”;
help 也可以作名词用，也表示“帮助”
Thank you for your help.
e.g. count the apples 数一数苹果
count from 1 to 10 从一数到十
Let's learn
count
(按顺序) 数数
They help us count things.
count 可以与需要数的数字或物品搭配
You have five orange pencils. I have six green pencils. How many pencils do we have
We have eleven pencils.
Listen and read
Let's learn
how many
多少
How many pencils do we have
询问事物的数量时可以用 how many。
【注意】how many 只能用于可数名词之前。
如果要询问不可数名词的数量，应使用how much。
Listen and read
We say, “Five plus
six equals eleven.”
We write ...
Let's learn
say
说;讲
We say, “Five plus six equals eleven.”
say 可以用来表示直接引用别人说的话或者自己的话。
e.g. She says, “I have six pencils.”
她说:“我有六支铅笔。”
You have five apples. Your sister comes and eats one apple. Now how many apples do you have
I have four apples now.
Listen and read
Listen and read
We say, “Five plus
six equals eleven.”
We write ...
use
说话
数数
帮助
说
使用
count
每天
help
every day
多少
how many
Play a game
Think and share
What do you learn about numbers
Think and share
Numbers help us count things.
Numbers can be even or odd.
We can add numbers together (plus +).
We can take numbers away (minus -).
Read and learn
we
e
/i /
e
Let’s chant
We play a game. Eva rolls the dice.
An even number — 12! How nice!
Jack rolls a nine. It’s five for me.
But Ali wins. She rolls a three!
e
v
e
Spell and say
03
Practice
Spell and say
s
h
e
Spell and say
b
e
Spell and say
m
e
Spell and say
sc
e
ne
03
Practice
Read and write
1 There are even numbers and
___________ numbers.
minus odd count
odd
Read and write
4
2 Numbers help us
___________ things.
count
minus odd count
Read and write
3 Five ___________ one equals four.
minus
minus odd count
Tick and say
There are odd and even numbers. We use numbers every day. They help us count things.
Odd and even numbers
Plus
Minus
Odd and even numbers
Plus
Minus
Tick and act
There is plus. We use plus every day. It helps us add things together.
Odd and even numbers
Plus
Minus
Tick and act
There is minus. We use minus every day. It helps us take away things to find how many are left.
Think and share
When do we use numbers in our daily lives
Think and share
We use numbers every day in many ways! We need them to tell time, count things, use money, know our age, call phone numbers, find house numbers, keep score in games, do math, check calendars, and measure stuff. Numbers help us understand the world!
04
Production
Listen and chant
We want ten apples for the party.
How many apples do we have
I don't have ten apples.
I have four apples.
But you have six apples,
So together we have ten!
How many
Let's learn
How many apples do we have
We have ten apples.
They don't have ten apples. They have two.
do not → don't
Let's learn
询问”我们有多少……？”
--How many ... do we have
--We have ... .
We have four books.
How many books do we have
Tick, ask and answer
How many books
do you have
I have three books.
1
0
2
3
Tick, ask and answer
How many pencils
do you have
I have two pencils.
1
0
2
3
Tick, ask and answer
How many rulers
do you have
I don’t have rulers.
1
0
2
3
Tick, ask and answer
How many pens
do you have
I have one pen.
1
0
2
3
Do a survey about how much stationery your classmates have. Then give a report.
Do a survey
Name pencil pen ruler eraser marker
—How many … do you have
—I have ….
Let's show
My classmates have many kinds of stationery(文具). Tom has … pencils, …pens and …rulers. …
Words & phrases
use; help; count; thing; say; every day; how many
Sentences
—How many...do we have
— We have...
… don’t have …
01
02
05
Summary
06
Homework
Must do:
Listen and repeat the passage on page 24-25.
Discuss when we use numbers in our daily lives.
Choose to do:
Write a short passage about numbers in our daily lives.
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