Surprise!

Surprise!

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

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The last date for submitting solutions is Friday 18 May.


Next-door Numbers 

Age 5 to 7 Challenge Level:
Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?

Light the Lights 

Age 5 to 7 Challenge Level:
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

How Would We Count? 

Age 5 to 11 Challenge Level:
An activity centred around observations of dots and how we visualise number arrangement patterns.

Square Surprise 

Age 5 to 11 Challenge Level:
Why do you think that the red player chose that particular dot in this game of Seeing Squares?

Pouring Problem 

Age 7 to 11 Challenge Level:
What do you think is going to happen in this video clip? Are you surprised?

Consecutive Numbers 

Age 7 to 14 Challenge Level:
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Subtraction Surprise 

Age 7 to 14 Challenge Level:
Try out some calculations. Are you surprised by the results?