These activities for upper primary children provide opportunities to recognise, extend and explain number patterns. They supplement the tasks in our Number Patterns feature.

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### Ip Dip

"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?

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### Up and Down Staircases

One block is needed to make an up-and-down staircase, with one step up and one step down. How many blocks would be needed to build an up-and-down staircase with 5 steps up and 5 steps down?

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### Number Differences

Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?

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### Tables Without Tens

Investigate and explain the patterns that you see from recording
just the units digits of numbers in the times tables.

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### Magic Vs

Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?

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### Light the Lights Again

Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you find the smallest number that lights up all four lights?

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### Sticky Triangles

Can you continue this pattern of triangles and begin to predict how many sticks are used for each new "layer"?