The listing method is a brilliant method in terms of underlying conceptual understanding – students can see exactly what they’re trying to achieve here. The greatest number which divides each of the two or more numbers is called HCF or Highest Common Factor.
During the activity the students need to list all the factors of the two numbers and find the biggest number that’s in both lists – that’s your HCF. Simple!
The aim of the activity was to encourage learners to reflect on their subject knowledge and the effectiveness of their explanations.
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