Curiosity is triggered when something unexpected happens. These problems aim to draw students in by offering that element of surprise.

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Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?

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Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

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Why do you think that the red player chose that particular dot in this game of Seeing Squares?

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An activity centred around observations of dots and how we visualise number arrangement patterns.

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What do you think is going to happen in this video clip? Are you surprised?

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An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

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Try out some calculations. Are you surprised by the results?