1. Lesson 3
Unit fraction（2）

2. 1 2

3. Write down the fraction of the coloured part3 1 5 1 4 1
（ ）
————
（ ）
———— 6 1
（ ）
————
（ ）
————

4. Numerator
Fraction line
Denominator
Unit fraction

5. True of False？
( )
( )
( )
( )

6. TURE OR FALSE Not divided equally Maybe not equal 1 （1） （ ） —4
（1） （ ） 1 —4
Not divided equally
Maybe not equal
（2）I divided a cake into 7 parts，
each part is of the cake （ ） 1 — 7
（3）I divided a rope into 3 equal parts，
each part is of the rope. （ ） 1 — 3

7. I divide all dogs into ( ) equal parts, each part is of the whole.1 12 6 4 3 2

8. I divide all dogs into ( ) equal parts, each part is of the whole.2 1 2 1 2 1 2

9. I divide all dogs into ( ) equal parts, each part is of the whole.3 1 3 1 3 1 3 1 3

10. I divide all dogs into ( ) equal parts, each part is of the whole.4 1 4 1 4 1 4 1 4 1 4

11. I divide all dogs into ( ) equal parts, each part is of the whole.6 1 6 1 6 1 6 1 6 1 6 1 6 1 6 1 4

12. 1 12 1 4

13. 1 1 4

14. Exercise1: Write down the unit fractions according to the picture.4 3 2
Traditional Chinese Food: Steamed small meat dumpling in basket
Traditional Chinese Snack: Suger-coated haws on a stick

15. Exercise2: Circle the part in the pictures according to the unit fractions.

16. Lesson 3 Exercises
1. Use the fraction to represent the parts of the circled. 1 1 1 3 6 4

17. 2. Circle according to the picture.
Lesson 3 Exercises
2. Circle according to the picture. 1 4 1 3

18. 2 Lesson 3 Exercises 1 3 3. Circle and think.
(1) of the six apples, we should
circle_______ apples. 1 3 2

19. Lesson 3 Exercises 1
( )
(2) Circle three apples, circled is 2

20. 1 8 1 2 Lesson 3 Exercises 4. (1) There are 8 students in a group,
each child is of the group;
(2) 4 children are of the group. 1
( ) 8 1
( ) 2

21. 1 3 1 2 3 2 5. (1) of 9 ☆ are ( ) ☆. (2) of 4 ○ are( ) ○.
Lesson 3 Exercises 5.
(1) of 9 ☆ are ( ) ☆.
(2) of 4 ○ are( ) ○. 1 3 3 1 2 2