As you are working on a mathematical task, you might come across something unexpected that takes you by surprise.

We hope these problems will surprise you and that you enjoy the challenge of explaining what is going on.

We hope these problems will surprise you and that you enjoy the challenge of explaining what is going on.

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

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

Challenge Level

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

Challenge Level

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