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Highest Common Factor, Lowest Common Multiple: Rich Tasks

You cannot beat a good rich task! For me, a rich task is one that both stimulates and challenges students of all ages and abilities. Here is a selection of some of my favourites.

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Median Rich Tasks and Purposeful Practise keyboard_arrow_up

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There are no words to express how much I love Don Steward and his amazing resources on his Median Blog. They allow for purposeful practise, to enable students to gain fluency in key skills. But they also have more than a sprinkling of richness, that leads students merrily along the path towards hypotheses and generalisations. Amazing.

Tables Practise
Sequence of Multiples
HCF
HCF and LCM
Highest Common Factor

NRICH keyboard_arrow_up

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NRICH is simply one of the best websites for rich maths problems in the whole wide world.

Gabriel’s problem
Multiple Surprises
Counting Cogs
Stars
Power Mad!
How much can we spend?
Expenses

Other Rich Tasks keyboard_arrow_up

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A selection of some of my favourite rich tasks, including – I must confess – some of my own. For my complete collection, including my thoughts on what makes a good rich task, please visit the Rich Tasks page.

Diagonals of Rectangles
Arithmagon - Highest Common Factor
Build an Army - HCF and LCM