1. division
Yan

2. 【1】
Arrangement
【2】
Difference
【3】
Today's lesson

3. Term 1 Grade 3 Term 2 Grade 3 Term 1 Grade 5
divided by a one-digit number
divided by a two-digit number
division of decimal
divide two-digit numbers
divided by tens
divided by a whole number
divide three-digit numbers
one-step division
divided by a decimal
two- or three-step division

4. 1
Greeting
&Test

6. 2
Review 1
Greeting
&Test

7. DMSB

8. Term 1 Grade 3 Term 2 Grade 3 Term 1 Grade 5
divided by a one-digit number
divided by a two-digit number
division of decimal
divide two-digit numbers
divided by tens
divided by a whole number
divide three-digit numbers
one-step division
divided by a decimal
two- or three-step division

9. 2
Review 1
Greeting
&Test 3
Divided by a one-digit number(1)

10. 432÷3=
144 1 4 4
432 3 3 2 3 1 12 13
tens 1 12
1. Divide the 4 hundreds by 3, it's 1 hundred.
2. Divide the 13 tens by 3, it's __ tens. 4
3. Divide the __ ones by 3, it's __ ones. 12 4

11. 2 4 1 3 Greeting &Test Divided by a one-digit number(2) Review

12. 652÷5=
130r2 1 3 r2
652 5 5 2 5 1 15 2
1. Divide the 6 hundreds by 5, it's __ hundred. 1
2. Divide the __ tens by 5, it's __ tens. 15 3
3. Divide the __ ones by 5, it's __ ones. 2

13. 421÷4=
105r1 1 5 r1
421 4 2 1 4 2 20 1
1. Divide the 4 hundreds by 4, it's __ hundred. 1
2. Divide the __ tens by 4, it's __ tens. 2
3. Divide the __ ones by 4, it's __ ones. 21 5

14. 138÷6= 23
Can 1 be divided by 6? 2 3
138 6 8 12
1 is less than 6.
Divide the tens directly. 1 18
1. Divide the 13 tens by 6, it's __ tens. 2
2. Divide the __ ones by 6, it's __ ones. 18 3

15. 2 4 1 3 5 Greeting &Test Divided by a one-digit number(2) Review
Divided by tens

16. 82÷30
circle by 30
( )×30＜82 2
( )×30＞82 3 2
So, ___ 30s in 82,
___ remain. 22

17. reasoning 82÷30 quotient 8÷3 ( ) 2 80÷30 ( ) 2 82÷30 ( ) 2 2
8÷ ( ) 2
80÷ ( )
reasoning 2
82÷ ( ) 2 2
So, ___ 30s in 82,
___ remain. 22

18. 82 paper-cuts for 30 children. How many can each one get?
82÷30= 2
r22 82 30 60
······2×30 22

19. 2 4 6 1 3 5 Greeting &Test Divided by a one-digit number(2)
one-step division(1) 2
Review 1
Greeting
&Test 3
Divided by a one-digit number(1) 5
Divided by tens

20. 296÷32= How many 32s in 296? 32×1=32 32×2=64 32×3=96 32×4=128 32×5=160…

21. 9 r8 296 32 288 8 296÷32= 9r8 first quotient try quotient
How many 32s in 296?
296 32
Think:
How many 30s in 296?
288
___ 30s in 296， 9 8
first
quotient
9×32=288，
try quotient
8 remain.

22. 2 4 6 1 3 7 5 Greeting &Test Divided by a one-digit number(2)
one-step division(1) 2
Review 1
Greeting
&Test 3
Divided by a one-digit number(1) 5
Divided by tens 7
Practice

23. 2 4 6 8 1 3 7 5 Greeting &Test Divided by a one-digit number(2)
one-step division(1) 8
one-step division(2) 2
Review 1
Greeting
&Test 3
Divided by a one-digit number(1) 5
Divided by tens 7
Practice

24. r11 8 7 172 23 184 161 11 172÷23= 7r11 How many 23s in 172? Think:
8×23=184，
too big !!!
7×23=161，
11 remain.

25. 6 7 273 39 234 273 39 273÷39= 7 try quotient with 40 Think:
How many 40s in 273?
234
273
___ 40s in 273. 6 39
6×39=234，
too small !!!
7×39=273，
0 remain.

26. 【1】
Arrangement
【2】
Difference
【3】
Today's lesson

27. 1. Different form
England: short division&long division
China: long division only
Most students in 6B like short division at first.
In my opinion, long division can present the meaning of each step.

28. 2. Different attitude to teaching resauces
England: many resources in almost each lesson
China: use not much

29. 432÷3=
144 1 4 4
432 3 3 2 3 1 12 13
tens 1 12
1. Divide the 4 hundreds by 3, it's 1 hundred.
2. Divide the 13 tens by 3, it's __ tens. 4
3. Divide the __ ones by 3, it's __ ones. 12 4

30. 652÷5=
130r2 1 3 r2
652 5 5 2 5 1 15 2
1. Divide the 6 hundreds by 5, it's __ hundred. 1
2. Divide the __ tens by 5, it's __ tens. 15 3
3. Divide the __ ones by 5, it's __ ones. 2

31. 2. Different attitude to teaching resauces
England: many resources in almost each lesson
China: use not much
Teaching resauses is really necessary sometimes because it helps understanding.
Chinese teachers aim to develop the student's thinking from visual to abstract.

32. 3. Chinese teachers teach special division
China: special division: 0 in the middle, 0 in the end
England: 0 in the front
China: like to estimate how many digits the quotient has before calculate

33. 4. Different teaching methods
China: “try quotient” is quite important when devided by a two-digit number.

34. 2 4 6 8 1 3 7 5 Greeting &Test Divided by a one-digit number(2)
one-step division(1) 8
one-step division(2) 2
Review 1
Greeting
&Test 3
Divided by a one-digit number(1) 5
Divided by tens 7
Practice

35. 296÷32= How many 32s in 296? 32×1=32 32×2=64 32×3=96 32×4=128 32×5=160…

36. 4. Different teaching methods
England:
advantage: easy to understand
disadvantage: slow,easy to make mistakes, not good to develop students' thinking

37. 9 r8 296 32 288 8 296÷32= 9r8 first quotient try quotient
How many 32s in 296?
296 32
Think:
How many 30s in 296?
288
___ 30s in 296， 9 8
first
quotient
9×32=288，
try quotient
8 remain.

38. 4. Different teaching methods
England:
advantage: easy to understand
disadvantage: slow,easy to make mistake,not good to develop students' thinking
China:
advantage: fast
disadvantage: need more thinking,more old knowledge

39. 5. Different time to practice
England: no homework
China: have homework every day, practice each day but not too much
when practice, they also think,even bring new thinking.

40. 6. Different lesson plan
China: small step

41. Term 1 Grade 3 Term 2 Grade 3 Term 1 Grade 5
divided by a one-digit number
divided by a two-digit number
division of decimal
divide two-digit numbers
divided by tens
divided by a whole number
divide three-digit numbers
one-step division
divided by a decimal
two- or three-step division

42. 【1】
Arrangement
【2】
Difference
【3】
Today's lesson

43. THANK YOU!