LO: Unit Fractions in discrete models(2).

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Presentation transcript:

LO: Unit Fractions in discrete models(2)

Reflection of Homework Put the following fractions from least to greatest ,linking with“<” and write on the line.

1 12 1 6 1 4 1 3 1 2 1

Unit fractions Numerator---”1” One part of the whole. Denominator--- All equal parts

Exercise1: Write down the unit fractions according to the picture. The whole is divided into ( ) equal parts, each part is ( ) of the whole. Traditional Chinese Food: Steamed small meat dumpling in basket Traditional Chinese Snack: Suger-coated haws on a stick

Exercise2: Circle the part in the pictures according to the unit fractions. The whole is divided into ( ) equal parts, each part is ( ) of the whole.

3 1 There are 9 ★. of 9 ★ is equal to ( ) ★ A 1 B 2 C 3 D 4 ★ ★ ★ Challenge 1: ★ ★ ★ There are 9 ★. of 9 ★ is equal to ( ) ★ A 1 B 2 C 3 D 4 1 3

4 1 There are 12 ★. of 12 ★ is equal to ( ) ★ A 1 B 2 C 3 D 4 ★ ★ ★ ★ Challenge 2: ★ ★ ★ ★ There are 12 ★. of 12 ★ is equal to ( ) ★ A 1 B 2 C 3 D 4 1 4

1 — 2 1 — 3 Challenge3: Tom and Mary each one has 6 pencils. Tom has used of all his pencils. Mary has used of all her pencils. Now, who has more pencils left? Why? (Maybe you can draw a brief picture to help you to understand and explain.)

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

I divide the line into ( ) equal parts, each part is of the line. ( ) colored parts are of the line. （） 5 10 （）（） 1 10 7 10

I divide 5 swans into ( ) equal parts, the red one is of the whole. black swans are of the whole.

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 Denominator---all equal parts. several (colored; circled)parts 5 10 3 4 Denominator---all equal parts.

Exercise1:Write down the fractions according to the pictures.

Exercise2: Color the part in the pictures according to the fractions.

Exercise3:Finish the table. Colored parts Not colored parts

Challenge1: What fractions can you see?

Challenge2: All the hearts is the whole. Red hearts: Blue hearts :