Bellsquarry Primary School

Life In Primary 7

In maths, we’ve been learning all about Fractions.  Fractions are ‘part of’ something.  For example, in a football match there is a first ‘half’ and a second ‘half’.  When we talk about time, we say ‘quarter’ past/to the hour and ‘half’ past the hour.  As you can see fractions are all around us and we use them without ever really stopping to think.

Equivalent Fractions

We have been looking at equivalent fractions, simplification of fractions and fractions of quantities.  Here’s what we have been finding out.

Imagine, Mr Hunter wants half a pizza, but the pizza is cut into four pieces, how many pieces should he eat?

 

pizza fractions - one half a pizza, and two quarters

Through discussion, we decided that getting one half of a pizza is the same as getting two quarters of the pizza. At least, Mr Hunter will munch down the same amount of pizza either way! This is what we mean when we say:

The fractions 1 over 2 and 2 over 4 are equivalent fractions.

The word equivalent means, ‘equal’ or ‘same value’. So equivalent fractions are fractions which are equal and with the same value.  Although we didn’t have any pizzas, we did use chocolate cubes to work out our equivalent fractions.  Here’s another example:

Mr Hunter has a chocolate bar and he divided it into 6 parts.  The class get two parts, so our share is two sixths.

two sixths of a bar of chocolate is the same as three ninths.

Now imagine that  the chocolate bar is divided into nine pieces and the class get three.  Now, we have three ninths, but when you look at both pictures, we still have the same amount of chocolate. Therefore, we can say that

the fractions 2 over 6 and 3 over 9 are equivalent fractions. This is what it means for fractions to be equivalent – that is equal and the same as.

 

Simplifying Fractions

We’ve also been looking at how to simplify fractions.  Simplifying (or reducing) fractions means to make the fraction as simple as possible.

Why say four-eighths when we really mean half?

4/8 ==> 2/4 ==> 1/2  
  (Four-Eighths)   (Two-Quarters)   (One-Half)

How do we simplify a Fraction ?

Firstly, we tried to evenly divide both the top and bottom of the fraction by 2, 3, 5, 7 and so on until we couldn’t go any further.

 

÷ 2 ÷ 2 ÷ 3
   
24  = 12  = 6  = 2
108 54 27 9
   
÷ 2 ÷ 2 ÷ 3

This is as far as we can go. The fraction simplifies to two-ninths (2/9).

We’ve also been looking at Growth Mindsets which is a different way of thinking and learning in class.  More of this to follow…..

 

Primary 7 & Mr Hunter

 

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