Secondary Toughnutslive
Age 11 to 18 Challenge Level:
These secondary problems have not yet been solved. Can you be the first?
Number Pyramidslive
Age 11 to 14 Challenge Level:
Try entering different sets of numbers in the number pyramids. How does the total at the top change?
More Number Pyramidslive
Age 11 to 14 Challenge Level:
When number pyramids have a sequence on the bottom layer, some interesting patterns emerge...
Integration Matcherlive
Age 16 to 18 Challenge Level:
Can you match the charts of these functions to the charts of their integrals?
Missing Multiplierslive
Age 7 to 14 Challenge Level:
What is the smallest number of answers you need to reveal in order to work out the missing headers?
Finding Factorslive
Age 14 to 16 Challenge Level:
Can you find the hidden factors which multiply together to produce each quadratic expression?
Function Pyramidslive
Age 16 to 18 Challenge Level:
A function pyramid is a structure where each entry in the pyramid is determined by the two entries below it. Can you figure out how the pyramid is generated?
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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.