Crossing the Bridge
Age 11 to 18
Challenge Level
Four friends must cross a bridge. How can they all cross it in just 17 minutes?
Last Biscuit
Age 11 to 18
Challenge Level
Can you find a strategy that ensures you get to take the last biscuit in this game?
Power Countdown
Age 14 to 16
Challenge Level
In this twist on the well-known Countdown numbers game, use your knowledge of Powers and Roots to make a target.
Who's Who?
Age 11 to 16
Challenge Level
Can you solve the clues to find out who's who on the friendship graph?
Name That Graph
Age 16 to 18
Challenge Level
How can you work out the equation of a parabola just by looking at key features of its graph?
Inspecting Identities
Age 16 to 18
Challenge Level
Using trig identities to help sketch graphs of functions
Euler Meets Schlegel
Age 16 to 18
Challenge Level
Discover how networks can be used to prove Euler's Polyhedron formula.
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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.