Make a pile of ten items. Pens and pencils would be suitable.
Each player takes it in turn to remove one, two or three items.
The player to remove the last item is the winner.
Play the game four or five times then write down any strategies you may have found.
Are you good enough to challenge the computer at this game?
The computer plays Multi-pile Nim.
Click the link below to start.
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Teacher, do your students have
access to computers?
Here is the URL for a concise version of this page without comments or answers.
Here is the URL which will take them to Multi-pile Nim which is a different game but based on similar principles.
Students might also like to try Calculator Nim