Unit3 Numbers第2课时(3&4) 课件（24张ppt)

(共24张PPT)
Unit
3
Numbers
第2课时
Parts
3&4
Join
in
四年级上册
>>Warm-up
Let's
sing.
>>Presentation
one
two
three
four
five
six
seven
eight
nine
ten
Let's
read.
>>Presentation
sing
the
song.
>>Presentation
Ask
and
answer.
1.
Where
does
the
monkey
live?
3.
What
does
he
eat
for
breakfast/lunch/dinner?
2.
What’s
his
favourite
colour/food/number?
He
lives
at
London
Zoo.
His
favourite
colour
is
yellow.
His
favourite
food
is
yellow.
His
favourite
number
is
ninety-nine.
>>Presentation
Look
and
say.
He
eats
thirty-three
bananas
for
breakfast.
>>Presentation
He
eats
thirty-three
bananas
for
lunch.
Look
and
say.
>>Presentation
He
eats
thirty-three
bananas
for
dinner.
Look
and
say.
Let’s
learn.
20
30
40
50
60
70
80
90
twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety
one
two
three
four
five
six
seven
eight
nine
ten
1
2
3
4
5
6
7
8
9
10
>>Presentation
Let’s
learn.
20
30
40
50
60
70
80
90
twelve
thirteen
fourteen
fifteen
sixteen
seventeen
eighteen
nineteen
12
13
14
15
16
17
18
19
twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety
>>Presentation
Let’s
learn.
100
a
hundred
ninety-nine
99
thirty-three
33
>>Presentation
Let’s
learn.
一至十二形各异，一个一个单独记。
后面加teen变十几，thirteen，fifteen看仔细。
几十后面加ty，twenty不同重点记。
forty没有字母u，thirty，fifty更出奇。
eighteen，eighty只有一个t。
若要表达几十几，几十短横1到9。
one
hundred
一百特殊记。
>>Practice
Game.
13
15
20
60
17
14
30
40
12
16
80
90
18
19
50
70
100
>>Presentation
Listen
and
say
the
rhyme.
One,
two,
three,
four,
Five,
six,
seven,
Eight,
nine,
ten,
And
now
eleven,
Twelve
is
two
plus
ten,
Now
let’s
start
again.
>>Presentation
Let’s
learn.
Twelve
is
two
plus
ten.
12=
2+10
>>Presentation
Two
is
twelve
minus
ten.
2=
12-10
Let’s
learn.
>>Practice
Do
the
sums
in
English.
49+49
37+43
52+25
19+17
18+48
90-38
76-57
82-32
24-5
99-26
Eg:
Eighteen
plus
forty-eight
is
sixty-six.
Eg:
Ninety-nine
minus
twenty-six
is
seventy-three.
>>Practice
Do
the
sums
in
English.
49+49
37+43
52+25
19+17
18+48
Eighteen
plus
forty-eight
is
sixty-six.
Thirty-seven
plus
forty-three
is
eighty.
Fifty-two
plus
twenty-five
is
seventy-seven.
Nineteen
plus
seventeen
is
thirty-six.
Forty-nine
plus
forty-nine
is
ninety-eight.
>>Practice
Do
the
sums
in
English.
90-38
76-57
82-32
24-5
99-26
Ninety-nine
minus
twenty-six
is
seventy-three.
Seventy-six
minus
fifty-seven
is
nineteen.
Eighty-two
minus
thirty-two
is
fifty.
Twenty-four
minus
five
is
nineteen.
Ninety
minus
thirty-eight
is
fifty-two.
Pairwork
Pairwork
A:
What
is
thirty-seven
plus
forty-three?
B:
It's
eighty.
A:
What
is
seventy-six
minus
fifty-seven?
B:
It's
nineteen.
twelve
thirteen
fourteen
fifteen
sixteen
seventeen
eighteen
nineteen
plus
minus
twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety
Summary.
Homework
1.
Review
the
numbers
from
1-100.
100
Thanks!