I can explain when a calculation represents scaling down and when it represents repeated addition
I can explain when a calculation represents scaling down and when it represents repeated addition
Scaling - Scaling is when something is transformed, through either shrinking or enlarging by a scale factor.
Repeated addition - Repeated addition is when the same object or value is added to itself more than once.
Numerator - The numerator is the number on the top of a fraction. It tells us how many parts we have/need.
Denominator - The denominator is the number on the bottom of a fraction. It tells us how many parts the whole has been divided into.
Pupils divide by the denominator and then multiply by the numerator without any conceptual understanding for why this works.
Ensure pupils spend time exploring how dividing and multiplying by either the numerator or denominator works in relation to a scaling or repeated addition strategy. Encourage pupils to reason when they would use one strategy over the other.
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