1. Why can’t they describe the elephant ?

2. Part And Whole

3. Who want to tell us some examples of whole and part in your daily life?

4. If China is the whole,
then, Shanghai is the part of China.

5. If Europe is the whole,
Then, … is the part of Europe.

6. 1)If our school as the part, ( ) can be the whole.
Complete the sentence
1)If our school as the part, ( ) can be the whole.
Cambridge
2)If Cambridge as the part, ( ) can be the whole. UK
3)If ( )as the part, the earth can be the whole. UK

7. whole
part

8. Who can answer me
What is the whole?

9. Find the difference
Divide in average

10. John
Tom

13. Can you help them?
Divide in average

14. Divide in average 1 3
3 parts

15. 1 2 How to write fractions： Numerator Fraction line Denominator
1st Fraction bar
2nd Denominator
3rd Numerator
are all fractions. 1
Numerator
Fraction line 2
Denominator

16. Unit Fractions Divide a whole into several same parts.
Each part is a fraction with numerator as one of this whole.
We call those numbers( )
as unit fractions

17. Fold these figures into1
Fold these figures into － 2

18. 大家折出各图形的 1 2 。 －

19. 大家折出各图形的 1 2 。 －

20. 大家折出各图形的 1 2 。 －

21. 大家折出各图形的 1 2 。 －

22. 大家折出各图形的 1 2 。 －

23. 大家折出各图形的 1 2 。 －

24. 大家折出各图形的 1 2 。 －

25. 大家折出各图形的 1 2 。 －

26. 大家折出各图形的 1 2 。 －

27. First：
What fraction can be used to represent white parts? 1 3 1 9 1 6

28. second： What fraction can be used to represent coloured parts? ( ) 1
( ) 1
( ) 1 3 2
( )
( ) 1 1 5 4

29. Third：
True or flase 1 4 1 5 × × 1 4 1 3 1 4 × √

30. Fourth： The shadow is a quarter of the square
Whose part is the shadow?
The shadow is a quarter of the square
The shadow is 1/10 of the rectangle
The shadow is 1/13 of the whole figure

31. Fraction in your life
Flag of France
Chocolate

32. Fraction in your life
flag of Fracne

33. what fraction
chocolate 8 2 4

34. chocolate

35. chocolate

36. chocolate

37. C what fraction can use to represent the red part？（ ） A. B. C. D.
challenge
what fraction can use to represent the red part？（ ）
A B C D. 1 — 8 6 4 2 C

40. 2 1

41. 4 1

42. 8 1

43. 16 1

44. 4 1 2 1 16 1 8 1

45. homework
Fold

46. Divide in average
3 parts