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Review Numerator Fraction line Denominator
1、 Know the fraction and some vocabulary about it. Numerator Fraction line Denominator 2、Know how to write fractions: 1st Fraction line 2nd Denominator 3rd Numerator
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numerators Not Unit Fractions with different
PowerPoint Templates Happy birthday Photo Jerry’s birthday with different numerators
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A 1 decimeters long tape,we divide into 5 equal parts.
Do it 1: A 1 decimeters long tape,we divide into 5 equal parts. You should make the tape coloured to make a new fraction. one decimeter First I divide the tape into ( ) equal parts, Then I take ( ) parts,it is ( ) of 1 decimeters,it is ( ) decimeter
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I divide the tape into ( 5 ) equal parts...
1 5 dm 1 5 dm 1 5 dm 1 5 dm 2 5 dm 1 5 dm 1 5 dm 1 5 dm 3 5 dm 1 5 dm 1 5 dm 1 5 dm 1 5 dm 4 5 dm 1 5 dm 1 5 dm 1 5 dm 1 5 dm 1 5 dm 5 dm
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use your mind 1 5 2 5 3 5 4 5 5 1dm
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what is the difference between them
1 5 One decimeter is( )decimeter. 1 5 2 5 1 5 Two decimeters are( ) decimeters. 1 5 Three decimeters are( )decimeters. 3 5 1 5 Four decimeters are( )decimeters. 4 5 1 5 Five decumeters are( )decimeters. 5 5 dm 1dm what is the difference between them
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What is not unit fraction? It has several unit fraction with same
Conclusion 1 What is not unit fraction? It has several unit fraction with same denominator.It is compose of several unit fracitons
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Do it 2 Suger-coated haws on a stick 1 7 2 7 3 7 4 7 5 7 6 7 7 7 = 1
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There are 12 sweets in the box
1)Create a new fraction equal to 1 with painting. 2)Discuss the meaning of your fraction in group. 3) Sum up what did you found.
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What kind of fraction is equal to 1?
when it's numerator and donominator are same ,the farction is equal to 1. Because the average into several parts of a whole,Took all the parts, is taking a whole.
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Exercis1 Fill in the blanks 3 parts,of them ,they are ( )of the whole
1、We divide a circle into 4 same parts,We take 3 parts,of them ,they are ( )of the whole circle。 3 4 1 4 = 3 ( ) 1 5 ( ) 2 = 2、 3 2 1 10 5 6 ( ) ( ) = 1 6 9 10 ( ) ( ) 5 = 9 one two three four five
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Exercise 2 Fill in the blanks
1、There are 8 same pieces of chocolate in the box,Tom eat 5 of them,so Tom eat ( )box of chocolate 5 8 box 2、The cake is divide into three same parts, 2 of them are( ) 2 3 cake 3、One box of sweets is divide into 7 same parts, four of them are( )。 4 7 box one two three four five
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Exercise 3 True or flase 1 4 1 5 1 4 × √ × one two three four five
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Exercise 4 coloured the figure 5 8 4 7 3 4 one two three four five
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Exercise 5 Use your mind 1、Use a right fraction to represent the yellow? 5 9 2、The number of A is B five times. B number is a number of ( )A A number is 6 times the number of b. B is ( )of the two number's sum。 1 5 1 7 one two three four five
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what did you learn in this lesson
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Review 1、 Equal parts. same size same amount
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