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Number Lines in Disguise
Estimating Angles
Shopping Basket
Same Length
Impossible Picture?
Iff
Resilience and the Growth Zone
Resilience and the Growth Zone
In this feature, we have chosen problems designed to promote a positive attitude to challenging mathematical situations. The article, Getting into and Staying in the Growth Zone is packed with information and advice on helping your students become less anxious and more resilient.
In this article for teachers, Clare Lee and Sue Johnston-Wilder explain how the Growth Zone model can help develop resilience in our learners.
Number Lines in Disguise Age 7 to 14Challenge Level 
Age 7 to 14
Challenge Level
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
Estimating Angles Age 7 to 14Challenge Level
Age 7 to 14
Challenge Level
How good are you at estimating angles?
Shopping Basket Age 11 to 16Challenge Level
Age 11 to 16
Challenge Level
The items in the shopping basket add and multiply to give the same amount. What could their prices be?
Same Length Age 11 to 16Challenge Level
Age 11 to 16
Challenge Level
Construct two equilateral triangles on a straight line. There are two lengths that look the same - can you prove it?
Impossible Picture? Age 14 to 16Challenge Level
Age 14 to 16
Challenge Level
Under what circumstances can you rearrange a big square to make three smaller squares?
Iff Age 14 to 18Challenge Level
Age 14 to 18
Challenge Level
Take a triangular number, multiply it by 8 and add 1. What is special about your answer? Can you prove it?