fractions: denominators and numerators
TRANSCRIPT
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Natasha Duffy
Cockenzie Primary School
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FRACTIONS
Learning OutcomeI can…
* explain what a fraction is.* explain what the denominator of a
fraction is and find the denominator of a fraction.
* explain what the numerator of a fraction is and find the numerator of a fraction.
* write a fraction.
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WHAT IS A FRACTION?
When an object is divided into a number of equal parts then each part is called a fraction
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numerator
denominator
2
3
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Denominator
The denominator says how many equal parts in the whole
object
1
22 equal parts
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How many equal parts are there in this shape?
What is the denominator of this fraction? 1
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Find the denominators of these fractions
1 1
1 1
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Draw what you think these fractions look like.
1
6
1
3
1
4
1
10
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So, the number on the bottom of a fraction tells us…
1
2?
(Find a partner and discuss what you think the answer is)
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numerator
The numerator says how many parts in the fraction
1
2
1 part is coloured in
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How many equal parts are coloured in in this shape?
What is the numerator of this fraction?
4
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Find the numerator for these fractions
4 3
8 8
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Draw what you think these fractions look like.
2
6
1
3
3
4
9
10
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So, the number on the top of a fraction tells us…
1
2?
(Find a partner and discuss what you think the answer is)
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The numerator tells us…
The denominator tells us…
2
3
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Find the fraction of these shapes