Why do this problem?
Children sometimes think there is only one representation of fractions; usually pizzas or cake slices! This game is designed to help children see fractions in many different ways: by looking at a range of images of one fraction they can begin to develop a deeper understanding of what a fraction is.
Children could play this in pairs at the computer, or you could use it as a whole class game using the IWB.
You could introduce the ideas by asking the group to tell you, or to draw, as many ways as they can of showing you a fraction, for example, a half or three quarters. Alternatively you could offer a couple of pictures and ask the children what fraction they represent, and how they know.
The different representations on the cards are not meant to be difficult to work out, but should give some opportunity for further discussion about why a particular image is a representation of a specific fraction. For this it can be useful to have different mathematical equipment available, as well as paper and coloured pencils. Perhaps the card that might be most challenging is the
oblong with red shading. Pupils will need to know the formula for calculating the area of a triangle in order to prove that this is indeed three quarters and one quarter.
If you want to play the game using 'real' cards rather than virtual ones, here is the set of cards.
What fraction does this show?
And this one?
Is it the same? How?
Is it different? How?
Learners could make their own sets of additional cards for the fractions used in the task or make additional sets of cards with different fractions. Here is a set of blank cards
. The game could be changed to a 'Happy Families' type game where the children work with printed sets of cards or their own sets to make sets of four or
more cards by exchanging cards with their neighbours. The task would then be to describe to their friend the card they are seeking. This would help them to develop descriptive language as well as their memory of who might hold the card.
An easier approach might be a sorting exercise in which children focused on sorting the printed cards
into matching sets.