Nim Games: 21 Game Score Sheet

Nim Games: 21 Game Score Sheet
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Nim is a mathematical game of strategy in which two players take turns removing objects from distinct heaps. On each turn, a player must remove at least one object, and may remove any number of objects provided they all come from the same heap. Variants of Nim have been played since ancient times.

Nim games are great filler games, or early finisher activities for math. They are fun and engaging for students to play. Directions for the 21 Game is on the score sheet. It is an easy way for students to keep track of their games and discuss any patterns they notice afterwards.

There is a trick to win every time, so using Math Talk to engage the students as they learn the game is really interesting. Enjoy!
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