Unit 6 I have fifty markers（3）课件（共30张PPT）

UNIT SIX I HAVE FIFTY MARKERS (3)
小学三年级 英语
Let’s sing.
What are the missing numbers?
Let’s guess.
Let’s review.
Let’s look and think.
Where are the children?
blackboard
They are in the classroom.
board
black
Let’s look and think.
blackboard
What are they doing?
They are playing number games.
Let’s watch and think.
What are they doing?
Let’s watch and think.
What do they say?
Let’s listen and say.
What does Lala ask?
Look at the numbers on the blackboard: 50,60,__,__,90. Who can guess the missing numbers?
Who can guess the missing numbers?
Can you guess the missing numbers?
Let’s listen and say.
What does Baobao say?
It’s easy. Fifty plus ten is sixty. So the missing numbers are seventy and eighty.
50
10
60
60
10
70
Let’s listen and say.
Let’s tell.
50，60，__，__，90
Fifty plus ten is sixty.
70
80
What are the missing numbers?
Why?
+10
+10
+10
+10
Sixty plus ten is seventy.
Seventy plus ten is eighty.
Eighty plus ten is ninety.
Let’s look and think.
What are the missing numbers?
Let’s listen and say.
What do they say?
Let’s listen and say.
One hundred minus ten is ninety.
100
10
90
What do they say?
one hundred
hun
dred
(百)
Let’s listen and say.
One hundred minus ten is ninety.
Ninety minus ten is eighty.
So the missing numbers are eighty and seventy.
Well done!
90
10
80
minus
（减）
What do they say?
100
10
90
Let’s tell.
100，90，___，__，60
One hundred minus ten is ninety.
70
80
Why?
Ninety minus ten is eighty.
Eighty minus ten is seventy.
Seventy minus ten is sixty.
-10
-10
-10
-10
What are the missing numbers?
Let’s listen and repeat.
Page 46
Let’s read in roles.
Let’s read in roles.
Let’s play.
Let’s play the number game!
?
It’s easy!
?
Let’s play.
Fifty plus ten is sixty.
What does Baobao say?
What is fifty plus ten?
?
?
Let’s play.
One hundred minus ten is ninety.
What does Lingling say?
What is one hundred minus ten?
?
Let’s play.
Seventy plus twenty is ninety.
What is seventy plus twenty?
70
20
70
20
90
Let’s play.
Seventy plus twenty is ninety.
What is seventy plus twenty?
70
20
70
20
90
50
What is seventy minus twenty?
Seventy minus twenty is fifty.
Can you do it?
A minus B is 50. A is 70.
B is____.
A plus B is 100. A is 60.
B is____.
Let’s play.
100
60
B
A plus B is 100. A is 60.
B is____.
40
B
40
A
B
100
Let’s play.
60
70
50
B
A plus B is 100. A is 60.
B is____.
A minus B is 50. A is 70.
B is____.
40
B
20
A
B
50
Let’s play.
70
20
Let’s summarize.
Fifty plus ten is sixty.
One hundred minus ten is ninety.
50
10
60
100
10
90
70 seventy
80 eighty
90 ninety
100 one hundred
blackboard
1. Read the dialog on page46.
2. Read, think and write.
Homework