1. Review 1) 3/4 has ( ) 1/4, 1/4 is the unit fraction. three
Unit fractions and not unit fractions
1) 3/4 has ( ) 1/4,
1/4 is the unit fraction.
three
2) 1/7 is ( ) of 5/7.
There are ( )1/7 in 5/7.
unit fraction
five

2. Compare fractions
WHAT?
WHY?

3. Compare Which one is bigger?

4. 1 — 2 1 — 4
<

5. 1 — 2 1 — 4
>

6. 1 — 4 = 1 — 2

7. Different sizes of the whole
Why?
Different sizes of the whole 1 — 2 1 — 4
> 1 — 2 1 — 4
< 1 — 4 = 1 — 2

8. What is the fraction of the colored parts in the figures below?1 4 1 5 1 2 1 3
the same whole 1 6 1 7 1 8 1 9 1 2 3 4 5 6 7 8 9

9. Q1: Which is the longest? Which is the shortest?
The Same Whole
1 meter
( ) meter
( ) meter 1 6 —
( ) meter
( ) meter
Q1: Which is the longest? Which is the shortest?
Q2:Can you compare these unit fractions with “>”?

10. more equal parts you divide,
Conclusion
For the same whole, the
more equal parts you divide,
the less each part you get. 　　　　 1 _ 1
1　　　　　　　　　　 — 4 —— —— 8 8 4
(less)
(more)
Denominator
Numerator

11. 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

12. Use unit fractions to tell me Which apple is near to the snail?

13. 3
has ( ) 7
has ( )
>

14. Reason to convince Mr Jin
1) and
2) and

15. 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.

16. Fill the blank with”>”、”<”、”=”7 4 5 4 ＜ ＜ 10 9 10 9 2 9 6 8 ＜ 1
( ) ＜ 16 16 8 8 7 3 3 2 ＜ ＜ 8 8 15 15 3 4 =1 = 3 4

17. ＜ Challenge 4 6 and which is biger? （ means a positive integer， ≠0） 4

18. Challenge A Tom B John C They left same D I don't know B <
Tom and John drink same capacity of juice ,Tom drink 4/5 of juice ,John drink 2/3 of juice ,who
left more juice? ( ) B
A Tom
B John
C They left same
D I don't know
<

19. what did you learn
in this lesson