1. Shanghai South Pudong Road Primary School
Teacher: Jin Qi

2. what I have taught this week
1 Part and whole ,Know the unit fractions.
2 Know the not unit fractions,and they were
composed of unit fractions.
3 Compare unit fractions and fractions with
same denominator.

3. Compare Fractions
Unit fraction and fractions
with same denominator

4. Quick Response: 1 3 2 1 3 6 ＞ ＞ 3 4 2 6 9 8 ＞ ＞ 1 8 5 9 11 ＝ ＞

5. Review:
Let us sum up
unit fraction
same doneminator

6. In unit fractions, if the denomina tor is bigger, then the value of
Conclusion:Unit fractions
In unit fractions, if the denomina
tor is bigger, then the value of
the unit fraction is smaller. 　 1 _ 1
1　　　　　　　　　　 — 4 —— —— 8 8 4

7. Compare the value of the fraction with
Conclusion:
fractions with
same denominator
Compare the value of the fraction with
the same denominator. The fraction with
the greater numerator is larger.

8. Compare:
Which one is bigger? 2 3 4
use your own ways to show me

9. Compare fractions
WHAT?
WHY?
with same numerators

10. Compare:
Which one is bigger? 2 3 4
>

11. Use unit fractions to tell me why?

12. Fraction Wall
has ( ) 2
has ( ) 2
>
>

13. Compare: < 5 5 > < Which one is bigger? 3/9 has （ ） 1/98
< 5
3/9 has （ ） 1/9 5
3/8has （ ） 1/8
1/9 （ ） 1/8
>
<
3/9 （ ） 3/8

14. Compare:
<

15. The fraction with the smaller denominator is greater.
Conclusion
Compare the value of the fractions
with same numerators.
The fraction with the smaller denominator is greater.

16. Exercise 1:Fill the blank with
”>”、”<”、”=” 1 10 1 22 12 16 12 15
>
< 17 20 17
100 3 5
>
< 1

17. Exercise 2
Compare fractions 7 7 5 4 ＜ ＜ 12 7 8 7 1 6 1 ＜ ＜ 1 10 7 9 5 5 8 8 ＜ ＜ 7 11 9 12

18. Exercise 3:Fill the brackets with right numbers1 4 2 7 5 3 6
( ) ＜ 8 8 5 5 5 ＜ ＜ 6 10 9
( ) 7 8 7 11
( ) 4 = = 11 4
( ) 7

19. Exercise 4:
Order these fractions from least to greatest 4 19 4 9 2 19 2 19 4 19 4 9
<
<

20. Challenge 1:Order these fractions
from least to greatest 1 1 3 1 5 8 6 15 6 6 ﹤ ﹤ ﹤ ﹤ 3 5 1 1 1 8 6 6 15 6

21. C They have the same speed D Can not judge
Challenge 2
Tom and John departure from Cambridge to London in same way by car .Tom used 3/4 hours.
John used 3/5 hours.who is faster? ( ) B
A Tom
B John
C They have the same speed
D Can not judge

22. what did you learn
in this lesson

23. Welcome to visit
my home