Fractions Non-unit fractions

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

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

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

1 4 1 3

1 2 1 4

1 4 1

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

Thinking: Are all equal? 1 2 Thinking: Are all equal? 1 — 2 1 — 2 1 — 2 1 — 2 Different whole

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

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

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

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

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?

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

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

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

Yellow: Blue: Green:

I have eaten of my chocolates. I have eaten of my chocolates. Challenge1: John 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.)

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

The red part is ( ) of the whole.