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Fractions (10) LO: not unit fractions.

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Presentation on theme: "Fractions (10) LO: not unit fractions."— Presentation transcript:

1 Fractions (10) LO: not unit fractions

2 Review The whole is divided into ( ) equal parts, blue part is ( ) of the whole. 5 1 5 1 5

3 The whole is divided into ( ) equal parts, blue part is ( ) of the whole.
2 1 2 1 2

4 The whole is divided into ( ) equal parts, blue part is ( ) of the whole.
4 1 4 1 4

5 1 4 1 3

6 1 2 1 4

7 1 4 1

8 1 3 1 2 1 Different whole Thinking: Why we use different numbers
to express the same red parts?

9 Thinking: Are all equal?
1 2 Thinking: Are all equal? 1 2 1 2 1 2 1 2 > < Different whole

10 Fractions (10) LO: Not unit fractions

11 3 2 3 1 Meter meter 1 Meter is divided into( ) equal parts,
each part is of 1 meter. Two equal parts are of 1 meter. 3 2 two equal parts of all 3 three equal parts altogether

12 The line is divided into ( ) equal parts, each part is of the line.
10 1 10 ( ) colored parts are of the line. 5 10 7 10 5 7 5 10 = five ( ) 1 10 1 10 1 10 1 10 1 10 1 10 1 10 1 10 1 10 1 10 ( ) ( ) 1 10 7 10 = seven

13 The square is divided into ( ) equal parts, each part is of the square.
( ) colored parts are of the square. 3 4 4 1 4 2 4 = 1

14 5 swans are divided into ( ) equal parts, the red one is of the whole.
1 5 black swans are of the whole. 4 5

15 Which one is unit fraction?
Conclusion 1 4 2 4 3 4 1 10 5 10 7 10 4 They are all fractions. Which one is unit fraction?

16 Conclusion Numerator--- 5 10 3 4
several equal parts (colored; circled) 5 10 3 4 Denominator---How many equal parts of the whole are divided

17 The whole is divided into ( ) equal parts,
Exercise1: Write down the fractions to express the colored or circled parts. The whole is divided into ( ) equal parts, ( ) colored/circled parts are ( ) of the whole. Traditional Chinese Food: Steamed small meat dumpling in basket Traditional Chinese Snack: Suger-coated haws on a stick

18 What fraction can you see in this picture?
Red parts: Green parts: Blue part:

19 Yellow: Blue: Green: yellow: Blue: Green:

20 Fractions in amusement park
Boats Cars Rounding cups

21 I have eaten of my chocolates. I have eaten of my chocolates.
Challenge1: Tom and Mary each one has some chocolates. I have eaten of my chocolates. I have eaten of my chocolates. 1 3 (Did they eat the same amount of chocolates? Maybe you can draw a brief picture to help you to explain your reasons.)

22 Challenge2: Fill in the table with fractions.
Corlored parts Not colored parts


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