Double or Halve?
Age 5 to 7
Challenge Level
Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?
Nim-7
Age 5 to 14
Challenge Level
Can you work out how to win this game of Nim? Does it matter if you go first or second?
Daisy
Age 7 to 11
Challenge Level
In this game for two players, take it in turns to shade one petal, or two petals next to each other. Is it better to go first or second?
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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.