Why can’t they describe the elephant ?

Part And Whole

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

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

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

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

whole part

Who can answer me What is the whole?

Find the difference Divide in average

John Tom

Can you help them? Divide in average

Divide in average 1 3 3 parts

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

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

Fold these figures into 1 Fold these figures into － 2

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

大家折出各图形的 1 2 。 －

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

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

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

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

Fraction in your life Flag of France Chocolate

Fraction in your life flag of Fracne

what fraction chocolate 8 2 4

chocolate

chocolate

chocolate

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

2 1

4 1

8 1

16 1

4 1 2 1 16 1 8 1

homework Fold

Divide in average 3 parts