Secondary Toughnutslive
Age 11 to 18 Challenge Level:
These secondary problems have not yet been solved. Can you be the first?
3D Treasure Huntlive
Age 14 to 18 Challenge Level:
Some treasure has been hidden in a three-dimensional grid! Can you work out a strategy to find it as efficiently as possible?
Connect Threelive
Age 11 to 16 Challenge Level:
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
First Connect Threelive
Age 7 to 14 Challenge Level:
Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?
Treasure Huntlive
Age 7 to 14 Challenge Level:
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
Iffy Logiclive
Age 14 to 18 Challenge Level:
Can you rearrange the cards to make a series of correct mathematical statements?
Nicola's Jigsawlive
Age 11 to 14 Challenge Level:
Nicola has lost a piece of her 3D jigsaw. Can you work out the shape of the missing piece?
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.